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     <xs:documentation>Microeconomics</xs:documentation>
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     <xs:documentation>Macroeconomics</xs:documentation>
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     <xs:documentation>General</xs:documentation>
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     <xs:documentation>Individuals</xs:documentation>
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     <xs:documentation>Economic Methodology</xs:documentation>
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     <xs:documentation>Economic Methodology</xs:documentation>
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     <xs:documentation>Other</xs:documentation>
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     <xs:documentation>Current Heterodox Approaches</xs:documentation>
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     <xs:documentation>General</xs:documentation>
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     <xs:documentation>Socialist; Marxian; Sraffian</xs:documentation>
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     <xs:documentation>Austrian</xs:documentation>
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     <xs:documentation>Other</xs:documentation>
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     <xs:documentation>Mathematical and Quantitative Methods</xs:documentation>
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     <xs:documentation>General</xs:documentation>
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     <xs:documentation>General</xs:documentation>
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     <xs:documentation>Bayesian Analysis</xs:documentation>
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     <xs:documentation>Estimation</xs:documentation>
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     <xs:documentation>Semiparametric and Nonparametric Methods</xs:documentation>
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     <xs:documentation>Statistical Simulation Methods; Monte Carlo Methods</xs:documentation>
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     <xs:documentation>Econometric and Statistical Methods: Specific Distributions</xs:documentation>
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     <xs:documentation>Other</xs:documentation>
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   <xs:enumeration value="C2">
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     <xs:documentation>Econometric Methods: - Single Equation Models</xs:documentation>
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    <xs:annotation>
     <xs:documentation>General</xs:documentation>
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   <xs:enumeration value="C21">
    <xs:annotation>
     <xs:documentation>Cross-Sectional Models; Spatial Models</xs:documentation>
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     <xs:documentation>Time-Series Models</xs:documentation>
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    <xs:annotation>
     <xs:documentation>Models with Panel Data</xs:documentation>
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   <xs:enumeration value="C24">
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     <xs:documentation>Truncated and Censored Models</xs:documentation>
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     <xs:documentation>Discrete Regression and Qualitative Choice Models</xs:documentation>
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     <xs:documentation>Other</xs:documentation>
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   <xs:enumeration value="C3">
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     <xs:documentation>Econometric Methods: - Multiple/Simultaneous Equation Models</xs:documentation>
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   <xs:enumeration value="C30">
    <xs:annotation>
     <xs:documentation>General</xs:documentation>
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   <xs:enumeration value="C31">
    <xs:annotation>
     <xs:documentation>Cross-Sectional Models; Spatial Models</xs:documentation>
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   </xs:enumeration>
   <xs:enumeration value="C32">
    <xs:annotation>
     <xs:documentation>Time-Series Models</xs:documentation>
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   </xs:enumeration>
   <xs:enumeration value="C33">
    <xs:annotation>
     <xs:documentation>Models with Panel Data</xs:documentation>
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   </xs:enumeration>
   <xs:enumeration value="C34">
    <xs:annotation>
     <xs:documentation>Truncated and Censored Models</xs:documentation>
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   </xs:enumeration>
   <xs:enumeration value="C35">
    <xs:annotation>
     <xs:documentation>Discrete Regression and Qualitative Choice Models</xs:documentation>
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   </xs:enumeration>
   <xs:enumeration value="C39">
    <xs:annotation>
     <xs:documentation>Other</xs:documentation>
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   </xs:enumeration>
   <xs:enumeration value="C4">
    <xs:annotation>
     <xs:documentation>Econometric and Statistical Methods: - Special Topics</xs:documentation>
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   <xs:enumeration value="C40">
    <xs:annotation>
     <xs:documentation>General</xs:documentation>
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   </xs:enumeration>
   <xs:enumeration value="C41">
    <xs:annotation>
     <xs:documentation>Duration Analysis</xs:documentation>
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   </xs:enumeration>
   <xs:enumeration value="C42">
    <xs:annotation>
     <xs:documentation>Survey Methods</xs:documentation>
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   </xs:enumeration>
   <xs:enumeration value="C43">
    <xs:annotation>
     <xs:documentation>Index Numbers and Aggregation</xs:documentation>
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   </xs:enumeration>
   <xs:enumeration value="C44">
    <xs:annotation>
     <xs:documentation>Statistical Decision Theory; Operations Research</xs:documentation>
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   <xs:enumeration value="C45">
    <xs:annotation>
     <xs:documentation>Neural Networks and Related Topics</xs:documentation>
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   <xs:enumeration value="C49">
    <xs:annotation>
     <xs:documentation>Other</xs:documentation>
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   </xs:enumeration>
   <xs:enumeration value="C5">
    <xs:annotation>
     <xs:documentation>Econometric Modeling</xs:documentation>
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   <xs:enumeration value="C50">
    <xs:annotation>
     <xs:documentation>General</xs:documentation>
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   <xs:enumeration value="C51">
    <xs:annotation>
     <xs:documentation>Model Construction and Estimation</xs:documentation>
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   <xs:enumeration value="C52">
    <xs:annotation>
     <xs:documentation>Model Evaluation and Testing</xs:documentation>
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   </xs:enumeration>
   <xs:enumeration value="C53">
    <xs:annotation>
     <xs:documentation>Forecasting and Other Model Applications</xs:documentation>
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   </xs:enumeration>
   <xs:enumeration value="C59">
    <xs:annotation>
     <xs:documentation>Other</xs:documentation>
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   </xs:enumeration>
   <xs:enumeration value="C6">
    <xs:annotation>
     <xs:documentation>Mathematical Methods and Programming</xs:documentation>
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   <xs:enumeration value="C60">
    <xs:annotation>
     <xs:documentation>General</xs:documentation>
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   <xs:enumeration value="C61">
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     <xs:documentation>Optimization Techniques; Programming Models; Dynamic Analysis</xs:documentation>
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   <xs:enumeration value="C62">
    <xs:annotation>
     <xs:documentation>Existence and Stability Conditions of Equilibrium</xs:documentation>
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   </xs:enumeration>
   <xs:enumeration value="C63">
    <xs:annotation>
     <xs:documentation>Computational Techniques</xs:documentation>
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   <xs:enumeration value="C65">
    <xs:annotation>
     <xs:documentation>Miscellaneous Mathematical Tools</xs:documentation>
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   <xs:enumeration value="C67">
    <xs:annotation>
     <xs:documentation>Input-Output Models</xs:documentation>
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   </xs:enumeration>
   <xs:enumeration value="C68">
    <xs:annotation>
     <xs:documentation>Computable General Equilibrium Models</xs:documentation>
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   </xs:enumeration>
   <xs:enumeration value="C69">
    <xs:annotation>
     <xs:documentation>Other</xs:documentation>
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   </xs:enumeration>
   <xs:enumeration value="C7">
    <xs:annotation>
     <xs:documentation>Game Theory and Bargaining Theory</xs:documentation>
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   </xs:enumeration>
   <xs:enumeration value="C70">
    <xs:annotation>
     <xs:documentation>General</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="C71">
    <xs:annotation>
     <xs:documentation>Cooperative Games</xs:documentation>
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   </xs:enumeration>
   <xs:enumeration value="C72">
    <xs:annotation>
     <xs:documentation>Noncooperative Games</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="C73">
    <xs:annotation>
     <xs:documentation>Stochastic and Dynamic Games</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="C78">
    <xs:annotation>
     <xs:documentation>Bargaining Theory; Matching Theory</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="C79">
    <xs:annotation>
     <xs:documentation>Other</xs:documentation>
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   </xs:enumeration>
   <xs:enumeration value="C8">
    <xs:annotation>
     <xs:documentation>Data Collection and Data Estimation Methodology; Computer Programs</xs:documentation>
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   </xs:enumeration>
   <xs:enumeration value="C80">
    <xs:annotation>
     <xs:documentation>General</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="C81">
    <xs:annotation>
     <xs:documentation>Methodology for Collecting, Estimating, and Organizing Microeconomic Data</xs:documentation>
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   </xs:enumeration>
   <xs:enumeration value="C82">
    <xs:annotation>
     <xs:documentation>Methodology for Collecting, Estimating, and Organizing Macroeconomic Data</xs:documentation>
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   </xs:enumeration>
   <xs:enumeration value="C87">
    <xs:annotation>
     <xs:documentation>Econometric Software</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="C88">
    <xs:annotation>
     <xs:documentation>Other Computer Software</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="C89">
    <xs:annotation>
     <xs:documentation>Other</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="C9">
    <xs:annotation>
     <xs:documentation>Design of Experiments</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="C90">
    <xs:annotation>
     <xs:documentation>General</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="C91">
    <xs:annotation>
     <xs:documentation>Laboratory, Individual Behavior</xs:documentation>
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   </xs:enumeration>
   <xs:enumeration value="C92">
    <xs:annotation>
     <xs:documentation>Laboratory, Group Behavior</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="C93">
    <xs:annotation>
     <xs:documentation>Field Experiments</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="C99">
    <xs:annotation>
     <xs:documentation>Other</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="D">
    <xs:annotation>
     <xs:documentation>Microeconomics</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="D00">
    <xs:annotation>
     <xs:documentation>General</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="D1">
    <xs:annotation>
     <xs:documentation>Household Behavior</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="D10">
    <xs:annotation>
     <xs:documentation>General</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="D11">
    <xs:annotation>
     <xs:documentation>Consumer Economics: Theory</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="D12">
    <xs:annotation>
     <xs:documentation>Consumer Economics: Empirical Analysis</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="D13">
    <xs:annotation>
     <xs:documentation>Household Production and Intrahouse Allocation</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="D14">
    <xs:annotation>
     <xs:documentation>Personal Finance</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="D18">
    <xs:annotation>
     <xs:documentation>Consumer Protection</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="D19">
    <xs:annotation>
     <xs:documentation>Other</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="D2">
    <xs:annotation>
     <xs:documentation>Production and Organizations</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="D20">
    <xs:annotation>
     <xs:documentation>General</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="D21">
    <xs:annotation>
     <xs:documentation>Firm Behavior</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="D23">
    <xs:annotation>
     <xs:documentation>Organizational Behavior; Transaction Costs; Property Rights</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="D24">
    <xs:annotation>
     <xs:documentation>Production; Capital and Total Factor Productivity; Capacity</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="D29">
    <xs:annotation>
     <xs:documentation>Other</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="D3">
    <xs:annotation>
     <xs:documentation>Distribution</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="D30">
    <xs:annotation>
     <xs:documentation>General</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="D31">
    <xs:annotation>
     <xs:documentation>Personal Income and Wealth Distribution</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="D33">
    <xs:annotation>
     <xs:documentation>Factor Income Distribution</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="D39">
    <xs:annotation>
     <xs:documentation>Other</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="D4">
    <xs:annotation>
     <xs:documentation>Market Structure and Pricing</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="D40">
    <xs:annotation>
     <xs:documentation>General</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="D41">
    <xs:annotation>
     <xs:documentation>Perfect Competition</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="D42">
    <xs:annotation>
     <xs:documentation>Monopoly</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="D43">
    <xs:annotation>
     <xs:documentation>Oligopoly and Other Forms of Market Imperfection</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="D44">
    <xs:annotation>
     <xs:documentation>Auctions</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="D45">
    <xs:annotation>
     <xs:documentation>Rationing; Licensing</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="D46">
    <xs:annotation>
     <xs:documentation>Value Theory</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="D49">
    <xs:annotation>
     <xs:documentation>Other</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="D5">
    <xs:annotation>
     <xs:documentation>General Equilibrium and Disequilibrium</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="D50">
    <xs:annotation>
     <xs:documentation>General</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="D51">
    <xs:annotation>
     <xs:documentation>Exchange and Production Economies</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="D52">
    <xs:annotation>
     <xs:documentation>Incomplete Markets</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="D57">
    <xs:annotation>
     <xs:documentation>Input-Output Analysis</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="D58">
    <xs:annotation>
     <xs:documentation>Computable and Other Applied General Equilibrium Models</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="D59">
    <xs:annotation>
     <xs:documentation>Other</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="D6">
    <xs:annotation>
     <xs:documentation>Welfare Economics</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="D60">
    <xs:annotation>
     <xs:documentation>General</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="D61">
    <xs:annotation>
     <xs:documentation>Allocative Efficiency; Cost-Benefit Analysis</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="D62">
    <xs:annotation>
     <xs:documentation>Externalities</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="D63">
    <xs:annotation>
     <xs:documentation>Equity, Justice, Inequality, and Other Normative Criteria and Measurement</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="D64">
    <xs:annotation>
     <xs:documentation>Altruism</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="D69">
    <xs:annotation>
     <xs:documentation>Other</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="D7">
    <xs:annotation>
     <xs:documentation>Analysis of Collective Decision-Making</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="D70">
    <xs:annotation>
     <xs:documentation>General</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="D71">
    <xs:annotation>
     <xs:documentation>Social Choice; Clubs; Committees</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="D72">
    <xs:annotation>
     <xs:documentation>Economic Models of Political Processes: Rent-Seeking, Elections, Legislatures, and Voting Behavior</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="D73">
    <xs:annotation>
     <xs:documentation>Bureaucracy; Administrative Processes in Public Organizations</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="D74">
    <xs:annotation>
     <xs:documentation>Conflict; Conflict Resolution; Alliances</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="D78">
    <xs:annotation>
     <xs:documentation>Positive Analysis of Policy-Making and Implementation</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="D79">
    <xs:annotation>
     <xs:documentation>Other</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="D8">
    <xs:annotation>
     <xs:documentation>Information and Uncertainty</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="D80">
    <xs:annotation>
     <xs:documentation>General</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="D81">
    <xs:annotation>
     <xs:documentation>Criteria for Decision-Making under Risk and Uncertainty</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="D82">
    <xs:annotation>
     <xs:documentation>Asymmetric and Private Information</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="D83">
    <xs:annotation>
     <xs:documentation>Search, Learning, and Information</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="D84">
    <xs:annotation>
     <xs:documentation>Expectations; Speculations</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="D89">
    <xs:annotation>
     <xs:documentation>Other</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="D9">
    <xs:annotation>
     <xs:documentation>Intertemporal Choice and Growth</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="D90">
    <xs:annotation>
     <xs:documentation>General</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="D91">
    <xs:annotation>
     <xs:documentation>Intertemporal Consumer Choice; Life Cycle Models and Saving</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="D92">
    <xs:annotation>
     <xs:documentation>Intertemporal Firm Choice and Growth, Investment, or Financing</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="D99">
    <xs:annotation>
     <xs:documentation>Other</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="E">
    <xs:annotation>
     <xs:documentation>Macroeconomics and Monetary Economics</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="E00">
    <xs:annotation>
     <xs:documentation>General</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="E1">
    <xs:annotation>
     <xs:documentation>General Aggregative Models</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="E10">
    <xs:annotation>
     <xs:documentation>General</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="E11">
    <xs:annotation>
     <xs:documentation>Marxian; Sraffian; Institutional; Evolutionary</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="E12">
    <xs:annotation>
     <xs:documentation>Keynes; Keynesian; Post-Keynesian</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="E13">
    <xs:annotation>
     <xs:documentation>Neoclassical</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="E17">
    <xs:annotation>
     <xs:documentation>Forecasting and Simulation</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="E19">
    <xs:annotation>
     <xs:documentation>Other</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="E2">
    <xs:annotation>
     <xs:documentation>Consumption, Saving, Production, Employment, and Investment</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="E20">
    <xs:annotation>
     <xs:documentation>General</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="E21">
    <xs:annotation>
     <xs:documentation>Consumption; Saving</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="E22">
    <xs:annotation>
     <xs:documentation>Capital; Investment (including Inventories); Capacity</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="E23">
    <xs:annotation>
     <xs:documentation>Production</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="E24">
    <xs:annotation>
     <xs:documentation>Employment; Unemployment; Wages</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="E25">
    <xs:annotation>
     <xs:documentation>Aggregate Factor Income Distribution</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="E27">
    <xs:annotation>
     <xs:documentation>Forecasting and Simulation</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="E29">
    <xs:annotation>
     <xs:documentation>Other</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="E3">
    <xs:annotation>
     <xs:documentation>Prices, Business Fluctuations, and Cycles</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="E30">
    <xs:annotation>
     <xs:documentation>General</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="E31">
    <xs:annotation>
     <xs:documentation>Price Level; Inflation; Deflation</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="E32">
    <xs:annotation>
     <xs:documentation>Business Fluctuations; Cycles</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="E37">
    <xs:annotation>
     <xs:documentation>Forecasting and Simulation</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="E39">
    <xs:annotation>
     <xs:documentation>Other</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="E4">
    <xs:annotation>
     <xs:documentation>Money and Interest Rates</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="E40">
    <xs:annotation>
     <xs:documentation>General</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="E41">
    <xs:annotation>
     <xs:documentation>Demand for Money</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="E42">
    <xs:annotation>
     <xs:documentation>Monetary Standards and Regimes; Government and the Monetary System</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="E43">
    <xs:annotation>
     <xs:documentation>Determination of Interest Rates; Term Structure of Interest Rates</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="E44">
    <xs:annotation>
     <xs:documentation>Financial Markets and the Macroeconomy</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="E47">
    <xs:annotation>
     <xs:documentation>Forecasting and Simulation</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="E49">
    <xs:annotation>
     <xs:documentation>Other</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="E5">
    <xs:annotation>
     <xs:documentation>Monetary Policy, Central Banking, and the Supply of Money and Credit</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="E50">
    <xs:annotation>
     <xs:documentation>General</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="E51">
    <xs:annotation>
     <xs:documentation>Money Supply; Credit; Money Multipliers</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="E52">
    <xs:annotation>
     <xs:documentation>Monetary Policy (Targets, Instruments, and Effects)</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="E53">
    <xs:annotation>
     <xs:documentation>Deposit Insurance</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="E58">
    <xs:annotation>
     <xs:documentation>Central Banks and Their Policies</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="E59">
    <xs:annotation>
     <xs:documentation>Other</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="E6">
    <xs:annotation>
     <xs:documentation>Macroeconomic - Aspects of Public Finance, Macroeconomic Policy,and General Outlook</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="E60">
    <xs:annotation>
     <xs:documentation>General</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="E61">
    <xs:annotation>
     <xs:documentation>Policy Objectives; Policy Designs and Consistency; Policy Coordination</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="E62">
    <xs:annotation>
     <xs:documentation>Fiscal Policy; Public Expenditures, Investment, and Finance; Taxation</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="E63">
    <xs:annotation>
     <xs:documentation>Comparative or Joint Analysis of Fiscal and Monetary or Stabilization Policy</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="E64">
    <xs:annotation>
     <xs:documentation>Incomes Policy; Price Policy</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="E65">
    <xs:annotation>
     <xs:documentation>Studies of Particular Policy Episodes</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="E66">
    <xs:annotation>
     <xs:documentation>General Outlook and Conditions</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="E69">
    <xs:annotation>
     <xs:documentation>Other</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="F">
    <xs:annotation>
     <xs:documentation>International Economics</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="F00">
    <xs:annotation>
     <xs:documentation>General</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="F01">
    <xs:annotation>
     <xs:documentation>Global Outlook</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="F02">
    <xs:annotation>
     <xs:documentation>International Economic Order; Economic Integration: General</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="F1">
    <xs:annotation>
     <xs:documentation>Trade</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="F10">
    <xs:annotation>
     <xs:documentation>General</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="F11">
    <xs:annotation>
     <xs:documentation>Neoclassical Models of Trade</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="F12">
    <xs:annotation>
     <xs:documentation>Models of Trade with Imperfect Competition and Scale Economies</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="F13">
    <xs:annotation>
     <xs:documentation>Commercial Policy; Protection; Promotion; Trade Negotiations</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="F14">
    <xs:annotation>
     <xs:documentation>Country and Industry Studies of Trade</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="F15">
    <xs:annotation>
     <xs:documentation>Economic Integration</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="F16">
    <xs:annotation>
     <xs:documentation>Trade and Labor Market Interactions</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="F17">
    <xs:annotation>
     <xs:documentation>Trade Forecasting and Simulation</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="F18">
    <xs:annotation>
     <xs:documentation>Trade and Environment</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="F19">
    <xs:annotation>
     <xs:documentation>Other</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="F2">
    <xs:annotation>
     <xs:documentation>International Factor Movements and International Business</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="F20">
    <xs:annotation>
     <xs:documentation>General</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="F21">
    <xs:annotation>
     <xs:documentation>International Investment; Long-Term Capital Movements</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="F22">
    <xs:annotation>
     <xs:documentation>International Migration</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="F23">
    <xs:annotation>
     <xs:documentation>Multinational Firms; International Business</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="F29">
    <xs:annotation>
     <xs:documentation>Other</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="F3">
    <xs:annotation>
     <xs:documentation>International Finance</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="F30">
    <xs:annotation>
     <xs:documentation>General</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="F31">
    <xs:annotation>
     <xs:documentation>Foreign Exchange</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="F32">
    <xs:annotation>
     <xs:documentation>Current Account Adjustment; Short-Term Capital Movements</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="F33">
    <xs:annotation>
     <xs:documentation>International Monetary Arrangements and Institutions</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="F34">
    <xs:annotation>
     <xs:documentation>International Lending and Debt Problems</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="F35">
    <xs:annotation>
     <xs:documentation>Foreign Aid</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="F36">
    <xs:annotation>
     <xs:documentation>Financial Aspects of Economic Integration</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="F39">
    <xs:annotation>
     <xs:documentation>Other</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="F4">
    <xs:annotation>
     <xs:documentation>Macroeconomic Aspects of International Trade and Finance</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="F40">
    <xs:annotation>
     <xs:documentation>General</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="F41">
    <xs:annotation>
     <xs:documentation>Open Economy Macroeconomics</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="F42">
    <xs:annotation>
     <xs:documentation>International Policy Coordination and Transmission</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="F43">
    <xs:annotation>
     <xs:documentation>Economic Growth of Open Economies</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="F47">
    <xs:annotation>
     <xs:documentation>Forecasting and Simulation</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="F49">
    <xs:annotation>
     <xs:documentation>Other</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="G">
    <xs:annotation>
     <xs:documentation>Financial Economics</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="G00">
    <xs:annotation>
     <xs:documentation>General</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="G1">
    <xs:annotation>
     <xs:documentation>General Financial Markets</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="G10">
    <xs:annotation>
     <xs:documentation>General</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="G11">
    <xs:annotation>
     <xs:documentation>Portfolio Choice</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="G12">
    <xs:annotation>
     <xs:documentation>Asset Pricing</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="G13">
    <xs:annotation>
     <xs:documentation>Contingent Pricing; Futures Pricing</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="G14">
    <xs:annotation>
     <xs:documentation>Information and Market Efficiency; Event Studies</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="G15">
    <xs:annotation>
     <xs:documentation>International Financial Markets</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="G18">
    <xs:annotation>
     <xs:documentation>Government Policy and Regulation</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="G19">
    <xs:annotation>
     <xs:documentation>Other</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="G2">
    <xs:annotation>
     <xs:documentation>Financial Institutions and Services</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="G20">
    <xs:annotation>
     <xs:documentation>General</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="G21">
    <xs:annotation>
     <xs:documentation>Banks; Other Depository Institutions; Mortgages</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="G22">
    <xs:annotation>
     <xs:documentation>Insurance; Insurance Companies</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="G23">
    <xs:annotation>
     <xs:documentation>Pension Funds; Other Private Financial Institutions</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="G24">
    <xs:annotation>
     <xs:documentation>Investment Banking; Venture Capital; Brokerage</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="G28">
    <xs:annotation>
     <xs:documentation>Government Policy and Regulation</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="G29">
    <xs:annotation>
     <xs:documentation>Other</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="G3">
    <xs:annotation>
     <xs:documentation>Corporate Finance and Governance</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="G30">
    <xs:annotation>
     <xs:documentation>General</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="G31">
    <xs:annotation>
     <xs:documentation>Capital Budgeting; Investment Policy</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="G32">
    <xs:annotation>
     <xs:documentation>Financing Policy; Capital and Ownership Structure</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="G33">
    <xs:annotation>
     <xs:documentation>Bankruptcy; Liquidation</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="G34">
    <xs:annotation>
     <xs:documentation>Mergers; Acquisitions; Restructuring; Corporate Governance</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="G35">
    <xs:annotation>
     <xs:documentation>Payout Policy</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="G38">
    <xs:annotation>
     <xs:documentation>Government Policy and Regulation</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="G39">
    <xs:annotation>
     <xs:documentation>Other</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="H">
    <xs:annotation>
     <xs:documentation>Public Economics</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="H00">
    <xs:annotation>
     <xs:documentation>General</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="H1">
    <xs:annotation>
     <xs:documentation>Structure and Scope of Government</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="H10">
    <xs:annotation>
     <xs:documentation>General</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="H11">
    <xs:annotation>
     <xs:documentation>Structure and Scope of Government</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="H19">
    <xs:annotation>
     <xs:documentation>Other</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="H2">
    <xs:annotation>
     <xs:documentation>Taxation, Subsidies, and Revenue</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="H20">
    <xs:annotation>
     <xs:documentation>General</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="H21">
    <xs:annotation>
     <xs:documentation>Efficiency; Optimal Taxation</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="H22">
    <xs:annotation>
     <xs:documentation>Incidence</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="H23">
    <xs:annotation>
     <xs:documentation>Externalities; Redistributive Effects; Environmental Taxes and Subsidies</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="H24">
    <xs:annotation>
     <xs:documentation>Personal Income and Other Nonbusiness Taxes and Subsidies</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="H25">
    <xs:annotation>
     <xs:documentation>Business Taxes and Subsidies</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="H26">
    <xs:annotation>
     <xs:documentation>Tax Evasion</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="H29">
    <xs:annotation>
     <xs:documentation>Other</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="H3">
    <xs:annotation>
     <xs:documentation>Fiscal Policies and Behavior of Economic Agents</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="H30">
    <xs:annotation>
     <xs:documentation>General</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="H31">
    <xs:annotation>
     <xs:documentation>Household</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="H32">
    <xs:annotation>
     <xs:documentation>Firm</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="H39">
    <xs:annotation>
     <xs:documentation>Other</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="H4">
    <xs:annotation>
     <xs:documentation>Publicly Provided Goods</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="H40">
    <xs:annotation>
     <xs:documentation>General</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="H41">
    <xs:annotation>
     <xs:documentation>Public Goods</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="H42">
    <xs:annotation>
     <xs:documentation>Publicly Provided Private Goods</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="H43">
    <xs:annotation>
     <xs:documentation>Project Evaluation; Social Discount Rate</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="H49">
    <xs:annotation>
     <xs:documentation>Other</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="H5">
    <xs:annotation>
     <xs:documentation>National Government Expenditures and Related Policies</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="H50">
    <xs:annotation>
     <xs:documentation>General</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="H51">
    <xs:annotation>
     <xs:documentation>Government Expenditures and Health</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="H52">
    <xs:annotation>
     <xs:documentation>Government Expenditures and Education</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="H53">
    <xs:annotation>
     <xs:documentation>Government Expenditures and Welfare Programs</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="H54">
    <xs:annotation>
     <xs:documentation>Infrastructures</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="H55">
    <xs:annotation>
     <xs:documentation>Social Security and Public Pensions</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="H56">
    <xs:annotation>
     <xs:documentation>National Security and War</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="H57">
    <xs:annotation>
     <xs:documentation>Procurement</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="H59">
    <xs:annotation>
     <xs:documentation>Other</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="H6">
    <xs:annotation>
     <xs:documentation>National Budget, Deficit, and Debt</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="H60">
    <xs:annotation>
     <xs:documentation>General</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="H61">
    <xs:annotation>
     <xs:documentation>Budget; Budget Systems</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="H62">
    <xs:annotation>
     <xs:documentation>Deficit; Surplus</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="H63">
    <xs:annotation>
     <xs:documentation>Debt; Debt Management</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="H69">
    <xs:annotation>
     <xs:documentation>Other</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="H7">
    <xs:annotation>
     <xs:documentation>State and Local Government; Intergovernmental Relations</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="H70">
    <xs:annotation>
     <xs:documentation>General</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="H71">
    <xs:annotation>
     <xs:documentation>State and Local Taxation, Subsidies, and Revenue</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="H72">
    <xs:annotation>
     <xs:documentation>State and Local Budget and Expenditures</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="H73">
    <xs:annotation>
     <xs:documentation>Interjurisdictional Differentials and Their Effects</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="H74">
    <xs:annotation>
     <xs:documentation>State and Local Borrowing</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="H77">
    <xs:annotation>
     <xs:documentation>Intergovernmental Relations; Federalism</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="H79">
    <xs:annotation>
     <xs:documentation>Other</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="H8">
    <xs:annotation>
     <xs:documentation>Miscellaneous Issues</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="H80">
    <xs:annotation>
     <xs:documentation>General</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="H81">
    <xs:annotation>
     <xs:documentation>Governmental Loans and Credits</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="H82">
    <xs:annotation>
     <xs:documentation>Governmental Property</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="H87">
    <xs:annotation>
     <xs:documentation>International Fiscal Issues</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="H89">
    <xs:annotation>
     <xs:documentation>Other</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="I">
    <xs:annotation>
     <xs:documentation>Health, Education, and Welfare</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="I00">
    <xs:annotation>
     <xs:documentation>General</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="I1">
    <xs:annotation>
     <xs:documentation>Health</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="I10">
    <xs:annotation>
     <xs:documentation>General</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="I11">
    <xs:annotation>
     <xs:documentation>Analysis of Health Care Markets</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="I12">
    <xs:annotation>
     <xs:documentation>Health Production: Nutrition, Mortality, Morbidity, Substance Abuse and Addiction, Disability, and Economic Behavior</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="I18">
    <xs:annotation>
     <xs:documentation>Government Policy; Regulation; Public Health</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="I19">
    <xs:annotation>
     <xs:documentation>Other</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="I2">
    <xs:annotation>
     <xs:documentation>Education</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="I20">
    <xs:annotation>
     <xs:documentation>General</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="I21">
    <xs:annotation>
     <xs:documentation>Analysis of Education</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="I22">
    <xs:annotation>
     <xs:documentation>Educational Finance</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="I28">
    <xs:annotation>
     <xs:documentation>Government Policy</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="I29">
    <xs:annotation>
     <xs:documentation>Other</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="I3">
    <xs:annotation>
     <xs:documentation>Welfare and Poverty</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="I30">
    <xs:annotation>
     <xs:documentation>General</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="I31">
    <xs:annotation>
     <xs:documentation>General Welfare; Basic Needs; Quality of Life</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="I32">
    <xs:annotation>
     <xs:documentation>Measurement and Analysis of Poverty</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="I38">
    <xs:annotation>
     <xs:documentation>Government Programs; Provision and Effects of Welfare Programs</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="I39">
    <xs:annotation>
     <xs:documentation>Other</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="J">
    <xs:annotation>
     <xs:documentation>Labor and Demographic Economics</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="J00">
    <xs:annotation>
     <xs:documentation>General</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="J1">
    <xs:annotation>
     <xs:documentation>Demographic Economics</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="J10">
    <xs:annotation>
     <xs:documentation>General</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="J11">
    <xs:annotation>
     <xs:documentation>Demographic Trends and Forecasts</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="J12">
    <xs:annotation>
     <xs:documentation>Marriage; Marital Dissolution; Family Structure</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="J13">
    <xs:annotation>
     <xs:documentation>Fertility; Family Planning; Child Care; Children; Youth</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="J14">
    <xs:annotation>
     <xs:documentation>Economics of the Elderly</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="J15">
    <xs:annotation>
     <xs:documentation>Economics of Minorities and Races</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="J16">
    <xs:annotation>
     <xs:documentation>Economics of Gender</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="J17">
    <xs:annotation>
     <xs:documentation>Value of Life; Foregone Income</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="J18">
    <xs:annotation>
     <xs:documentation>Public Policy</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="J19">
    <xs:annotation>
     <xs:documentation>Other</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="J2">
    <xs:annotation>
     <xs:documentation>Time Allocation; Work Behavior; Employment Determination and Creation</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="J20">
    <xs:annotation>
     <xs:documentation>General</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="J21">
    <xs:annotation>
     <xs:documentation>Labor Force and Employment, Size, and Structure</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="J22">
    <xs:annotation>
     <xs:documentation>Time Allocation and Labor Supply (hours of work, part-time employment, work sharing, absenteeism, quits)</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="J23">
    <xs:annotation>
     <xs:documentation>Employment Determination; Demand for Labor; Self-employment</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="J24">
    <xs:annotation>
     <xs:documentation>Human Capital; Skills; Occupational Choice; Labor Productivity (Formal Training Programs; On-the-Job Training)</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="J26">
    <xs:annotation>
     <xs:documentation>Retirement; Retirement Policies</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="J28">
    <xs:annotation>
     <xs:documentation>Safety; Accidents; Industrial Health; Job Satisfaction; Related Public Policy</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="J29">
    <xs:annotation>
     <xs:documentation>Other</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="J3">
    <xs:annotation>
     <xs:documentation>Wages, Compensation, and Labor Costs</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="J30">
    <xs:annotation>
     <xs:documentation>General</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="J31">
    <xs:annotation>
     <xs:documentation>Wage Level and Structure; Wage Differentials by Skill, Training, Occupation, etc.</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="J32">
    <xs:annotation>
     <xs:documentation>Nonwage Labor Costs and Benefits; Private Pensions</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="J33">
    <xs:annotation>
     <xs:documentation>Compensation Packages; Payment Methods</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="J38">
    <xs:annotation>
     <xs:documentation>Public Policy</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="J39">
    <xs:annotation>
     <xs:documentation>Other</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="J4">
    <xs:annotation>
     <xs:documentation>Particular Labor Markets</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="J40">
    <xs:annotation>
     <xs:documentation>General</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="J41">
    <xs:annotation>
     <xs:documentation>Contracts: Specific Human Capital, Matching Models, Efficiency Wage Models, and Internal Labor Markets</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="J42">
    <xs:annotation>
     <xs:documentation>Monopsony; Segmented Labor Markets</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="J43">
    <xs:annotation>
     <xs:documentation>Agricultural Labor Markets</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="J44">
    <xs:annotation>
     <xs:documentation>Professional Labor Markets and Occupations Firm Behavior (the Commons)</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="J45">
    <xs:annotation>
     <xs:documentation>Public Sector Labor Markets</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="J48">
    <xs:annotation>
     <xs:documentation>Particular Labor Markets: Public Policy</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="J49">
    <xs:annotation>
     <xs:documentation>Other</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="J5">
    <xs:annotation>
     <xs:documentation>Labor-Management Relations, Trade Unions, and Collective Bargaining</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="J50">
    <xs:annotation>
     <xs:documentation>General</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="J51">
    <xs:annotation>
     <xs:documentation>Trade Unions: Objectives, Structure, and Effects</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="J52">
    <xs:annotation>
     <xs:documentation>Dispute Resolution: Strikes; Arbitration; Mediation</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="J53">
    <xs:annotation>
     <xs:documentation>Labor-Management Relations; Industrial Jurisprudence</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="J54">
    <xs:annotation>
     <xs:documentation>Producer Cooperatives; Labor Managed Firms</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="J58">
    <xs:annotation>
     <xs:documentation>Public Policy</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="J59">
    <xs:annotation>
     <xs:documentation>Other</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="J6">
    <xs:annotation>
     <xs:documentation>Mobility, Unemployment, and Vacancies</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="J60">
    <xs:annotation>
     <xs:documentation>General</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="J61">
    <xs:annotation>
     <xs:documentation>Geographic Labor Mobility; Immigrant Workers</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="J62">
    <xs:annotation>
     <xs:documentation>Occupational and Intergenerational Mobility</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="J63">
    <xs:annotation>
     <xs:documentation>Turnover; Vacancies; Layoffs</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="J64">
    <xs:annotation>
     <xs:documentation>Unemployment: Models, Duration, Incidence, and Job Search</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="J65">
    <xs:annotation>
     <xs:documentation>Unemployment Insurance; Severance Pay; Plant Closings</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="J68">
    <xs:annotation>
     <xs:documentation>Public Policy</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="J69">
    <xs:annotation>
     <xs:documentation>Other</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="J7">
    <xs:annotation>
     <xs:documentation>Discrimination</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="J70">
    <xs:annotation>
     <xs:documentation>General</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="J71">
    <xs:annotation>
     <xs:documentation>Discrimination</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="J78">
    <xs:annotation>
     <xs:documentation>Public Policy</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="J79">
    <xs:annotation>
     <xs:documentation>Other</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="J8">
    <xs:annotation>
     <xs:documentation>Labor Standards: National and International</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="J80">
    <xs:annotation>
     <xs:documentation>General</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="J81">
    <xs:annotation>
     <xs:documentation>Working Conditions (safety, hours)</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="J82">
    <xs:annotation>
     <xs:documentation>Labor Force Composition (child labor, prison labor, bonded labor, immigrant labor, racial and gender discrimination)</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="J83">
    <xs:annotation>
     <xs:documentation>Workers' Rights</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="J88">
    <xs:annotation>
     <xs:documentation>Public Policy</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="J89">
    <xs:annotation>
     <xs:documentation>Other</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="K">
    <xs:annotation>
     <xs:documentation>Law and Economics</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="K00">
    <xs:annotation>
     <xs:documentation>General</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="K1">
    <xs:annotation>
     <xs:documentation>Basic Areas of Law</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="K10">
    <xs:annotation>
     <xs:documentation>General</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="K11">
    <xs:annotation>
     <xs:documentation>Property Law</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="K12">
    <xs:annotation>
     <xs:documentation>Contract Law</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="K13">
    <xs:annotation>
     <xs:documentation>Tort Law and Product Liability</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="K14">
    <xs:annotation>
     <xs:documentation>Criminal Law</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="K19">
    <xs:annotation>
     <xs:documentation>Other</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="K2">
    <xs:annotation>
     <xs:documentation>Regulation and Business Law</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="K20">
    <xs:annotation>
     <xs:documentation>General</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="K21">
    <xs:annotation>
     <xs:documentation>Antitrust Law</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="K22">
    <xs:annotation>
     <xs:documentation>Corporation and Securities Law</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="K23">
    <xs:annotation>
     <xs:documentation>Regulated Industries and Administrative Law</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="K29">
    <xs:annotation>
     <xs:documentation>Other</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="K3">
    <xs:annotation>
     <xs:documentation>Other Substantive Areas of Law</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="K30">
    <xs:annotation>
     <xs:documentation>General</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="K31">
    <xs:annotation>
     <xs:documentation>Labor Law</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="K32">
    <xs:annotation>
     <xs:documentation>Environmental, Health, and Safety Law</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="K33">
    <xs:annotation>
     <xs:documentation>International Law</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="K34">
    <xs:annotation>
     <xs:documentation>Tax Law</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="K39">
    <xs:annotation>
     <xs:documentation>Other</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="K4">
    <xs:annotation>
     <xs:documentation>Legal Procedure, the Legal System, and Illegal Behavior</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="K40">
    <xs:annotation>
     <xs:documentation>General</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="K41">
    <xs:annotation>
     <xs:documentation>Litigation Process</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="K42">
    <xs:annotation>
     <xs:documentation>Illegal Behavior and the Enforcement of Law</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="K49">
    <xs:annotation>
     <xs:documentation>Other</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="L">
    <xs:annotation>
     <xs:documentation>Industrial Organization</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="L00">
    <xs:annotation>
     <xs:documentation>General</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="L1">
    <xs:annotation>
     <xs:documentation>Market Structure, Firm Strategy, and Market Performance</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="L10">
    <xs:annotation>
     <xs:documentation>General</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="L11">
    <xs:annotation>
     <xs:documentation>Production, Pricing, and Market Structure; Size Distribution of Firms (Concentration, Product Differentiation, Entry and Exit)</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="L12">
    <xs:annotation>
     <xs:documentation>Monopoly; Monopolization Strategies</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="L13">
    <xs:annotation>
     <xs:documentation>Oligopoly and Other Imperfect Markets</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="L14">
    <xs:annotation>
     <xs:documentation>Transactional Relationships; Contracts and Reputation</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="L15">
    <xs:annotation>
     <xs:documentation>Information and Product Quality</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="L16">
    <xs:annotation>
     <xs:documentation>Industrial Organization and Macroeconomics; Macroeconomic Industrial Structure</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="L19">
    <xs:annotation>
     <xs:documentation>Other</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="L2">
    <xs:annotation>
     <xs:documentation>Firm Objectives, Organization, and Behavior</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="L20">
    <xs:annotation>
     <xs:documentation>General</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="L21">
    <xs:annotation>
     <xs:documentation>Business Objectives of the Firm</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="L22">
    <xs:annotation>
     <xs:documentation>Firm Organization and Market Structure: Markets vs. Hierarchies; Vertical Integration</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="L23">
    <xs:annotation>
     <xs:documentation>Organization of Production</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="L25">
    <xs:annotation>
     <xs:documentation>Firm Size and Performance</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="L29">
    <xs:annotation>
     <xs:documentation>Other</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="L3">
    <xs:annotation>
     <xs:documentation>Nonprofit Organizations and Public Enterprise</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="L30">
    <xs:annotation>
     <xs:documentation>General</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="L31">
    <xs:annotation>
     <xs:documentation>Nonprofit Institutions</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="L32">
    <xs:annotation>
     <xs:documentation>Public Enterprises</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="L33">
    <xs:annotation>
     <xs:documentation>Boundaries of Public and Private Enterprise; Privatization; Contracting Out</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="L39">
    <xs:annotation>
     <xs:documentation>Other</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="L4">
    <xs:annotation>
     <xs:documentation>Antitrust Policy</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="L40">
    <xs:annotation>
     <xs:documentation>General</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="L41">
    <xs:annotation>
     <xs:documentation>Monopolization; Horizontal Anticompetitive Practices</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="L42">
    <xs:annotation>
     <xs:documentation>Vertical Restraints; Resale Price Maintenance; Quantity Discounts</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="L43">
    <xs:annotation>
     <xs:documentation>Legal Monopolies and Regulation or Deregulation</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="L44">
    <xs:annotation>
     <xs:documentation>Antitrust Policy and Public Enterprise, Nonprofit Institutions, and Professional Organizations</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="L49">
    <xs:annotation>
     <xs:documentation>Other</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="L5">
    <xs:annotation>
     <xs:documentation>Regulation and Industrial Policy</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="L50">
    <xs:annotation>
     <xs:documentation>General</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="L51">
    <xs:annotation>
     <xs:documentation>Economics of Regulation</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="L52">
    <xs:annotation>
     <xs:documentation>Industrial Policy; Sectoral Planning Methods</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="L59">
    <xs:annotation>
     <xs:documentation>Other</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="L6">
    <xs:annotation>
     <xs:documentation>Industry Studies: Manufacturing</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="L60">
    <xs:annotation>
     <xs:documentation>General</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="L61">
    <xs:annotation>
     <xs:documentation>Metals and Metal Products; Cement; Glass; Ceramics</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="L62">
    <xs:annotation>
     <xs:documentation>Automobiles; Other Transportation Equipment</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="L63">
    <xs:annotation>
     <xs:documentation>Microelectronics; Computers; Communications Equipment</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="L64">
    <xs:annotation>
     <xs:documentation>Other Machinery; Business Equipment; Armaments</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="L65">
    <xs:annotation>
     <xs:documentation>Chemicals; Rubber; Drugs; Biotechnology</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="L66">
    <xs:annotation>
     <xs:documentation>Food; Beverages; Cosmetics; Tobacco</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="L67">
    <xs:annotation>
     <xs:documentation>Other Consumer Nondurables: Clothing, Textiles, Shoes, and Leather</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="L68">
    <xs:annotation>
     <xs:documentation>Appliances; Other Consumer Durables</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="L69">
    <xs:annotation>
     <xs:documentation>Other</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="L7">
    <xs:annotation>
     <xs:documentation>Industry Studies: Primary Products and Construction</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="L70">
    <xs:annotation>
     <xs:documentation>General</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="L71">
    <xs:annotation>
     <xs:documentation>Mining, Extraction, and Refining: Hydrocarbon Fuels</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="L72">
    <xs:annotation>
     <xs:documentation>Mining, Extraction, and Refining: Other Nonrenewable Resources</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="L73">
    <xs:annotation>
     <xs:documentation>Forest Products: Lumber and Paper</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="L74">
    <xs:annotation>
     <xs:documentation>Construction</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="L79">
    <xs:annotation>
     <xs:documentation>Other</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="L8">
    <xs:annotation>
     <xs:documentation>Industry Studies: Services</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="L80">
    <xs:annotation>
     <xs:documentation>General</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="L81">
    <xs:annotation>
     <xs:documentation>Retail and Wholesale Trade; Warehousing</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="L82">
    <xs:annotation>
     <xs:documentation>Entertainment; Media (Performing Arts, Visual Arts, Broadcasting, Publishing, etc.)</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="L83">
    <xs:annotation>
     <xs:documentation>Sports; Gambling; Recreation; Tourism</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="L84">
    <xs:annotation>
     <xs:documentation>Personal and Professional Services</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="L85">
    <xs:annotation>
     <xs:documentation>Real Estate Services</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="L86">
    <xs:annotation>
     <xs:documentation>Information and Internet Services; Computer Software</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="L89">
    <xs:annotation>
     <xs:documentation>Other</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="L9">
    <xs:annotation>
     <xs:documentation>Industry Studies: Transportation and Utilities</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="L90">
    <xs:annotation>
     <xs:documentation>General</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="L91">
    <xs:annotation>
     <xs:documentation>Transportation: General</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="L92">
    <xs:annotation>
     <xs:documentation>Railroads and Other Surface Transportation: Autos, Buses, Trucks, and Water Carriers</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="L93">
    <xs:annotation>
     <xs:documentation>Air Transportation</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="L94">
    <xs:annotation>
     <xs:documentation>Electric Utilities</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="L95">
    <xs:annotation>
     <xs:documentation>Gas Utilities; Pipelines; Water Utilities</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="L96">
    <xs:annotation>
     <xs:documentation>Telecommunications</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="L97">
    <xs:annotation>
     <xs:documentation>Utilities: General</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="L98">
    <xs:annotation>
     <xs:documentation>Government Policy</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="L99">
    <xs:annotation>
     <xs:documentation>Other</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="M">
    <xs:annotation>
     <xs:documentation>Business Administration and Business Economics; Marketing; Accounting</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="M00">
    <xs:annotation>
     <xs:documentation>General</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="M1">
    <xs:annotation>
     <xs:documentation>Business Administration</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="M10">
    <xs:annotation>
     <xs:documentation>General</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="M11">
    <xs:annotation>
     <xs:documentation>Production Management</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="M12">
    <xs:annotation>
     <xs:documentation>Personnel Management</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="M13">
    <xs:annotation>
     <xs:documentation>Entrepreneurship</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="M14">
    <xs:annotation>
     <xs:documentation>Corporate Culture; Social Responsibility</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="M19">
    <xs:annotation>
     <xs:documentation>Other</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="M2">
    <xs:annotation>
     <xs:documentation>Business Economics</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="M20">
    <xs:annotation>
     <xs:documentation>General</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="M21">
    <xs:annotation>
     <xs:documentation>Business Economics</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="M29">
    <xs:annotation>
     <xs:documentation>Other</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="M3">
    <xs:annotation>
     <xs:documentation>Marketing and Advertising</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="M30">
    <xs:annotation>
     <xs:documentation>General</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="M31">
    <xs:annotation>
     <xs:documentation>Marketing</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="M37">
    <xs:annotation>
     <xs:documentation>Advertising</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="M39">
    <xs:annotation>
     <xs:documentation>Other</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="M4">
    <xs:annotation>
     <xs:documentation>Accounting</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="M40">
    <xs:annotation>
     <xs:documentation>General</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="M41">
    <xs:annotation>
     <xs:documentation>Accounting</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="M49">
    <xs:annotation>
     <xs:documentation>Other</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="M5">
    <xs:annotation>
     <xs:documentation>Personnel Economics</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="M50">
    <xs:annotation>
     <xs:documentation>General</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="M51">
    <xs:annotation>
     <xs:documentation>Firm Employment Decisions; Promotions (hiring, firing, turnover, part-time seniority issues)</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="M52">
    <xs:annotation>
     <xs:documentation>Compensation and Compensation Methods and Their Effects (stock options, fringe benefits, incentives, seniority issues)</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="M53">
    <xs:annotation>
     <xs:documentation>Training</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="M54">
    <xs:annotation>
     <xs:documentation>Labor Management (team formation, worker empowerment, job design, tasks and authority, job satisfaction)</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="M55">
    <xs:annotation>
     <xs:documentation>Labor Contracting: Outsourcing; Franchising: Other</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="N">
    <xs:annotation>
     <xs:documentation>Economic History</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="N00">
    <xs:annotation>
     <xs:documentation>General</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="N01">
    <xs:annotation>
     <xs:documentation>Development of the Discipline: Historiographical; Sources and Methods</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="N1">
    <xs:annotation>
     <xs:documentation>Macroeconomics and Monetary Economics; Growth and Fluctuations</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="N10">
    <xs:annotation>
     <xs:documentation>General, International, or Comparative</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="N11">
    <xs:annotation>
     <xs:documentation>U.S.; Canada: Pre-1913</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="N12">
    <xs:annotation>
     <xs:documentation>U.S.; Canada: 1913-71</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="N13">
    <xs:annotation>
     <xs:documentation>Europe: Pre-1913</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="N14">
    <xs:annotation>
     <xs:documentation>Europe: 1913-71</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="N15">
    <xs:annotation>
     <xs:documentation>Asia including Middle East</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="N16">
    <xs:annotation>
     <xs:documentation>Latin America; Caribbean</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="N17">
    <xs:annotation>
     <xs:documentation>Africa; Oceania</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="N2">
    <xs:annotation>
     <xs:documentation>Financial Markets and Institutions</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="N20">
    <xs:annotation>
     <xs:documentation>General, International, or Comparative</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="N21">
    <xs:annotation>
     <xs:documentation>U.S.; Canada: Pre-1913</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="N22">
    <xs:annotation>
     <xs:documentation>U.S.; Canada: 1913-71</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="N23">
    <xs:annotation>
     <xs:documentation>Europe: Pre-1913</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="N24">
    <xs:annotation>
     <xs:documentation>Europe: 1913-71</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="N25">
    <xs:annotation>
     <xs:documentation>Asia including Middle East</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="N26">
    <xs:annotation>
     <xs:documentation>Latin America; Caribbean</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="N27">
    <xs:annotation>
     <xs:documentation>Africa; Oceania</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="N3">
    <xs:annotation>
     <xs:documentation>Labor and Consumers, Demography, Education, Income and Wealth</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="N30">
    <xs:annotation>
     <xs:documentation>General, International, or Comparative</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="N31">
    <xs:annotation>
     <xs:documentation>U.S.; Canada: Pre-1913</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="N32">
    <xs:annotation>
     <xs:documentation>U.S.; Canada: 1913-71</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="N33">
    <xs:annotation>
     <xs:documentation>Europe: Pre-1913</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="N34">
    <xs:annotation>
     <xs:documentation>Europe: 1913-71</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="N35">
    <xs:annotation>
     <xs:documentation>Asia including Middle East</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="N36">
    <xs:annotation>
     <xs:documentation>Latin America; Caribbean</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="N37">
    <xs:annotation>
     <xs:documentation>Africa; Oceania</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="N4">
    <xs:annotation>
     <xs:documentation>Government, War, Law, and Regulation</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="N40">
    <xs:annotation>
     <xs:documentation>General, International, or Comparative</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="N41">
    <xs:annotation>
     <xs:documentation>U.S.; Canada: Pre-1913</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="N42">
    <xs:annotation>
     <xs:documentation>U.S.; Canada: 1913-71</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="N43">
    <xs:annotation>
     <xs:documentation>Europe: Pre-1913</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="N44">
    <xs:annotation>
     <xs:documentation>Europe: 1913-71</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="N45">
    <xs:annotation>
     <xs:documentation>Asia including Middle East</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="N46">
    <xs:annotation>
     <xs:documentation>Latin America; Caribbean</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="N47">
    <xs:annotation>
     <xs:documentation>Africa; Oceania</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="N5">
    <xs:annotation>
     <xs:documentation>Agriculture, Natural Resources, Environment, and Extractive Industries</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="N50">
    <xs:annotation>
     <xs:documentation>General, International, or Comparative</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="N51">
    <xs:annotation>
     <xs:documentation>U.S.; Canada: Pre-1913</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="N52">
    <xs:annotation>
     <xs:documentation>U.S.; Canada: 1913-71</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="N53">
    <xs:annotation>
     <xs:documentation>Europe: Pre-1913</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="N54">
    <xs:annotation>
     <xs:documentation>Europe: 1913-71</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="N55">
    <xs:annotation>
     <xs:documentation>Asia including Middle East</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="N56">
    <xs:annotation>
     <xs:documentation>Latin America; Caribbean</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="N57">
    <xs:annotation>
     <xs:documentation>Africa; Oceania</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="N6">
    <xs:annotation>
     <xs:documentation>Manufacturing and Construction</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="N60">
    <xs:annotation>
     <xs:documentation>General, International, or Comparative</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="N61">
    <xs:annotation>
     <xs:documentation>U.S.; Canada: Pre-1913</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="N62">
    <xs:annotation>
     <xs:documentation>U.S.; Canada: 1913-71</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="N63">
    <xs:annotation>
     <xs:documentation>Europe: Pre-1913</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="N64">
    <xs:annotation>
     <xs:documentation>Europe: 1913-71</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="N65">
    <xs:annotation>
     <xs:documentation>Asia including Middle East</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="N66">
    <xs:annotation>
     <xs:documentation>Latin America; Caribbean</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="N67">
    <xs:annotation>
     <xs:documentation>Africa; Oceania</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="N7">
    <xs:annotation>
     <xs:documentation>Transport, International and Domestic Trade, Energy, and Other Services</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="N70">
    <xs:annotation>
     <xs:documentation>General, International, or Comparative</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="N71">
    <xs:annotation>
     <xs:documentation>U.S.; Canada: Pre-1913</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="N72">
    <xs:annotation>
     <xs:documentation>U.S.; Canada: 1913-71</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="N73">
    <xs:annotation>
     <xs:documentation>Europe: Pre-1913</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="N74">
    <xs:annotation>
     <xs:documentation>Europe: 1913-71</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="N75">
    <xs:annotation>
     <xs:documentation>Asia including Middle East</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="N76">
    <xs:annotation>
     <xs:documentation>Latin America; Caribbean</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="N77">
    <xs:annotation>
     <xs:documentation>Africa; Oceania</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="N8">
    <xs:annotation>
     <xs:documentation>Micro-Business History</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="N80">
    <xs:annotation>
     <xs:documentation>General, International, or Comparative</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="N81">
    <xs:annotation>
     <xs:documentation>U.S.; Canada: Pre-1913</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="N82">
    <xs:annotation>
     <xs:documentation>U.S.; Canada: 1913-71</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="N83">
    <xs:annotation>
     <xs:documentation>Europe: Pre-1913</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="N84">
    <xs:annotation>
     <xs:documentation>Europe: 1913-71</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="N85">
    <xs:annotation>
     <xs:documentation>Asia including Middle East</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="N86">
    <xs:annotation>
     <xs:documentation>Latin America; Caribbean</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="N87">
    <xs:annotation>
     <xs:documentation>Africa; Oceania</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="N9">
    <xs:annotation>
     <xs:documentation>Regional and Urban History</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="N90">
    <xs:annotation>
     <xs:documentation>General</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="N910">
    <xs:annotation>
     <xs:documentation>U.S.; Canada: Pre-1913</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="N920">
    <xs:annotation>
     <xs:documentation>U.S.; Canada: 1913-</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="N930">
    <xs:annotation>
     <xs:documentation>Europe: Pre-1913</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="N940">
    <xs:annotation>
     <xs:documentation>Europe: 1913-</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="N950">
    <xs:annotation>
     <xs:documentation>Asia including Middle East</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="N960">
    <xs:annotation>
     <xs:documentation>Latin America; Caribbean</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="N970">
    <xs:annotation>
     <xs:documentation>Africa; Oceania</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="O">
    <xs:annotation>
     <xs:documentation>Economic Development, Technological Change, and Growth</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="O00">
    <xs:annotation>
     <xs:documentation>General</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="O1">
    <xs:annotation>
     <xs:documentation>Economic Development</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="O10">
    <xs:annotation>
     <xs:documentation>General</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="O11">
    <xs:annotation>
     <xs:documentation>Macroeconomic Analyses of Economic Development</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="O12">
    <xs:annotation>
     <xs:documentation>Microeconomic Analyses of Economic Development</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="O13">
    <xs:annotation>
     <xs:documentation>Agriculture; Natural Resources; Environment; Other Primary Products</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="O14">
    <xs:annotation>
     <xs:documentation>Industrialization; Choice of Technology</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="O15">
    <xs:annotation>
     <xs:documentation>Human Resources; Income Distribution; Migration</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="O16">
    <xs:annotation>
     <xs:documentation>Financial Markets; Saving and Capital Investment</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="O17">
    <xs:annotation>
     <xs:documentation>Formal and Informal Sectors; Shadow Economy; Institutional Arrangements</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="O18">
    <xs:annotation>
     <xs:documentation>Regional, Urban, and Rural Analyses</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="O19">
    <xs:annotation>
     <xs:documentation>International Linkages to Development; Role of International Organizations</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="O2">
    <xs:annotation>
     <xs:documentation>Development Planning and Policy</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="O20">
    <xs:annotation>
     <xs:documentation>General</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="O21">
    <xs:annotation>
     <xs:documentation>Planning Models; Planning Policy</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="O22">
    <xs:annotation>
     <xs:documentation>Project Analysis</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="O23">
    <xs:annotation>
     <xs:documentation>Fiscal and Monetary Policy in Development</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="O24">
    <xs:annotation>
     <xs:documentation>Trade Policy; Factor Movement; Foreign Exchange Policy</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="O29">
    <xs:annotation>
     <xs:documentation>Other</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="O3">
    <xs:annotation>
     <xs:documentation>Technological Change</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="O30">
    <xs:annotation>
     <xs:documentation>General</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="O31">
    <xs:annotation>
     <xs:documentation>Innovation and Invention: Processes and Incentives</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="O32">
    <xs:annotation>
     <xs:documentation>Management of Technological Innovation and R&amp;D</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="O33">
    <xs:annotation>
     <xs:documentation>Technological Change: Choices and Consequences</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="O34">
    <xs:annotation>
     <xs:documentation>Intellectual Property Rights: National and International Issues</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="O38">
    <xs:annotation>
     <xs:documentation>Government Policy</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="O39">
    <xs:annotation>
     <xs:documentation>Other</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="O4">
    <xs:annotation>
     <xs:documentation>Economic Growth and Aggregate Productivity</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="O40">
    <xs:annotation>
     <xs:documentation>General</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="O41">
    <xs:annotation>
     <xs:documentation>One, Two, and Multisector Growth Models</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="O42">
    <xs:annotation>
     <xs:documentation>Monetary Growth Models</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="O47">
    <xs:annotation>
     <xs:documentation>Measurement of Economic Growth; Aggregate Productivity</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="O49">
    <xs:annotation>
     <xs:documentation>Other</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="O5">
    <xs:annotation>
     <xs:documentation>Economywide Country Studies</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="O50">
    <xs:annotation>
     <xs:documentation>General</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="O51">
    <xs:annotation>
     <xs:documentation>U.S.; Canada</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="O52">
    <xs:annotation>
     <xs:documentation>Europe</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="O53">
    <xs:annotation>
     <xs:documentation>Asia including Middle East</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="O54">
    <xs:annotation>
     <xs:documentation>Latin America; Caribbean</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="O55">
    <xs:annotation>
     <xs:documentation>Africa</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="O56">
    <xs:annotation>
     <xs:documentation>Oceania</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="O57">
    <xs:annotation>
     <xs:documentation>Comparative Studies of Countries</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="P">
    <xs:annotation>
     <xs:documentation>Economic Systems</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="P00">
    <xs:annotation>
     <xs:documentation>General</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="P1">
    <xs:annotation>
     <xs:documentation>Capitalist Systems</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="P10">
    <xs:annotation>
     <xs:documentation>General</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="P11">
    <xs:annotation>
     <xs:documentation>Planning, Coordination, and Reform</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="P12">
    <xs:annotation>
     <xs:documentation>Capitalist Enterprises</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="P13">
    <xs:annotation>
     <xs:documentation>Cooperative Enterprises</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="P14">
    <xs:annotation>
     <xs:documentation>Property Rights</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="P16">
    <xs:annotation>
     <xs:documentation>Political Economy</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="P17">
    <xs:annotation>
     <xs:documentation>Performance and Prospects</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="P19">
    <xs:annotation>
     <xs:documentation>Other</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="P2">
    <xs:annotation>
     <xs:documentation>Socialist Systems and Transitional Economies</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="P20">
    <xs:annotation>
     <xs:documentation>General</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="P21">
    <xs:annotation>
     <xs:documentation>Planning, Coordination, and Reform</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="P22">
    <xs:annotation>
     <xs:documentation>Prices</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="P23">
    <xs:annotation>
     <xs:documentation>Factor and Product Markets</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="P24">
    <xs:annotation>
     <xs:documentation>National Income, Product, and Expenditure; Money; Inflation</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="P26">
    <xs:annotation>
     <xs:documentation>Political Economy</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="P27">
    <xs:annotation>
     <xs:documentation>Performance and Prospects</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="P29">
    <xs:annotation>
     <xs:documentation>Other</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="P3">
    <xs:annotation>
     <xs:documentation>Socialist Institutions and Their Transitions</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="P30">
    <xs:annotation>
     <xs:documentation>General</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="P31">
    <xs:annotation>
     <xs:documentation>Socialist Enterprises and Their Transitions</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="P32">
    <xs:annotation>
     <xs:documentation>Collectives; Communes; Agricultural Institutions</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="P33">
    <xs:annotation>
     <xs:documentation>International Linkages</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="P34">
    <xs:annotation>
     <xs:documentation>Finance</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="P35">
    <xs:annotation>
     <xs:documentation>Public Finance</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="P36">
    <xs:annotation>
     <xs:documentation>Consumer Economics; Health, Education, Welfare, and Poverty</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="P37">
    <xs:annotation>
     <xs:documentation>Legal</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="P39">
    <xs:annotation>
     <xs:documentation>Other</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="P4">
    <xs:annotation>
     <xs:documentation>Other Economic Systems</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="P40">
    <xs:annotation>
     <xs:documentation>General</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="P41">
    <xs:annotation>
     <xs:documentation>Planning, Coordination, and Reform</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="P42">
    <xs:annotation>
     <xs:documentation>Productive Enterprises; Factor and Product Markets; Prices</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="P43">
    <xs:annotation>
     <xs:documentation>Finance; Public Finance</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="P44">
    <xs:annotation>
     <xs:documentation>National Income, Product, and Expenditure; Money; Inflation</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="P45">
    <xs:annotation>
     <xs:documentation>International Linkages</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="P46">
    <xs:annotation>
     <xs:documentation>Household Behavior</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="P47">
    <xs:annotation>
     <xs:documentation>Performance and Prospects</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="P49">
    <xs:annotation>
     <xs:documentation>Other</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="P5">
    <xs:annotation>
     <xs:documentation>Comparative Economic Systems</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="P50">
    <xs:annotation>
     <xs:documentation>General</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="P51">
    <xs:annotation>
     <xs:documentation>Comparative Analysis of Economic Systems</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="P52">
    <xs:annotation>
     <xs:documentation>Comparative Studies of Particular Economies</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="P59">
    <xs:annotation>
     <xs:documentation>Other</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="Q">
    <xs:annotation>
     <xs:documentation>Agricultural and Natural Resource Economics</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="Q00">
    <xs:annotation>
     <xs:documentation>General</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="Q01">
    <xs:annotation>
     <xs:documentation>Sustainable Development</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="Q1">
    <xs:annotation>
     <xs:documentation>Agriculture</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="Q10">
    <xs:annotation>
     <xs:documentation>General</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="Q11">
    <xs:annotation>
     <xs:documentation>Aggregate Supply and Demand Analysis; Prices</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="Q12">
    <xs:annotation>
     <xs:documentation>Micro Analysis of Farm Firms, Farm Households, and Farm Input Markets</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="Q13">
    <xs:annotation>
     <xs:documentation>Agricultural Markets and Marketing; Cooperatives; Agribusiness</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="Q14">
    <xs:annotation>
     <xs:documentation>Agricultural Finance</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="Q15">
    <xs:annotation>
     <xs:documentation>Land Ownership and Tenure; Land Reform; Land Use; Irrigation</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="Q16">
    <xs:annotation>
     <xs:documentation>R&amp;amp;D; Agricultural Technology; Agricultural Extension Services</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="Q17">
    <xs:annotation>
     <xs:documentation>Agriculture in International Trade</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="Q18">
    <xs:annotation>
     <xs:documentation>Agricultural Policy; Food Policy</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="Q19">
    <xs:annotation>
     <xs:documentation>Other</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="Q2">
    <xs:annotation>
     <xs:documentation>Renewable Resources and Conservation; Environmental Management</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="Q20">
    <xs:annotation>
     <xs:documentation>General</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="Q21">
    <xs:annotation>
     <xs:documentation>Demand and Supply; Environmental Modeling and Forecasting Firm Behavior (the Commons) Institutions; Illegal Behavior</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="Q22">
    <xs:annotation>
     <xs:documentation>Fishery</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="Q23">
    <xs:annotation>
     <xs:documentation>Forestry</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="Q24">
    <xs:annotation>
     <xs:documentation>Land</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="Q25">
    <xs:annotation>
     <xs:documentation>Water; Air; Climate; Noise</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="Q26">
    <xs:annotation>
     <xs:documentation>Recreational Aspects of Natural Resources; Contingent Valuation Methods</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="Q28">
    <xs:annotation>
     <xs:documentation>Government Policy</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="Q29">
    <xs:annotation>
     <xs:documentation>Other</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="Q3">
    <xs:annotation>
     <xs:documentation>Nonrenewable Resources and Conservation</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="Q30">
    <xs:annotation>
     <xs:documentation>General</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="Q31">
    <xs:annotation>
     <xs:documentation>Demand and Supply</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="Q32">
    <xs:annotation>
     <xs:documentation>Exhaustible Resources and Economic Development</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="Q33">
    <xs:annotation>
     <xs:documentation>Resource Booms</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="Q38">
    <xs:annotation>
     <xs:documentation>Government Policy</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="Q39">
    <xs:annotation>
     <xs:documentation>Other</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="Q4">
    <xs:annotation>
     <xs:documentation>Energy</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="Q40">
    <xs:annotation>
     <xs:documentation>General</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="Q41">
    <xs:annotation>
     <xs:documentation>Demand and Supply</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="Q42">
    <xs:annotation>
     <xs:documentation>Alternative Energy Sources</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="Q43">
    <xs:annotation>
     <xs:documentation>Energy and the Macroeconomy</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="Q48">
    <xs:annotation>
     <xs:documentation>Government Policy</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="Q49">
    <xs:annotation>
     <xs:documentation>Other</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="R">
    <xs:annotation>
     <xs:documentation>Urban, Rural, and Regional Economics</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="R00">
    <xs:annotation>
     <xs:documentation>General</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="R1">
    <xs:annotation>
     <xs:documentation>General Regional Economics</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="R10">
    <xs:annotation>
     <xs:documentation>General</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="R11">
    <xs:annotation>
     <xs:documentation>Analysis of Growth, Development, and Changes</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="R12">
    <xs:annotation>
     <xs:documentation>Size and Spatial Distributions of Regional Economic Activity</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="R13">
    <xs:annotation>
     <xs:documentation>General Equilibrium and Welfare Economic Analysis of Regional Economies</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="R14">
    <xs:annotation>
     <xs:documentation>Land Use Patterns</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="R15">
    <xs:annotation>
     <xs:documentation>Econometric and Input-Output Models; Other Models</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="R19">
    <xs:annotation>
     <xs:documentation>Other</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="R2">
    <xs:annotation>
     <xs:documentation>Household Analysis</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="R20">
    <xs:annotation>
     <xs:documentation>General</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="R21">
    <xs:annotation>
     <xs:documentation>Housing Demand</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="R22">
    <xs:annotation>
     <xs:documentation>Other Demand</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="R23">
    <xs:annotation>
     <xs:documentation>Regional Migration; Regional Labor Markets; Population</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="R29">
    <xs:annotation>
     <xs:documentation>Other</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="R3">
    <xs:annotation>
     <xs:documentation>Production Analysis and Firm Location</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="R30">
    <xs:annotation>
     <xs:documentation>General</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="R31">
    <xs:annotation>
     <xs:documentation>Housing Supply and Markets</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="R32">
    <xs:annotation>
     <xs:documentation>Other Production and Pricing Analysis</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
   <xs:enumeration value="R33">
    <xs:annotation>
     <xs:documentation>Nonagricultural and Nonresidential Real Estate Markets</xs:documentation>
    </xs:annotation>
   </xs:enumeration>
