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      <record key="001" att1="001" value="LIB903797902" att2="LIB903797902">001   LIB903797902</record>
      <field key="010" subkey="">LIB903797409</field>
      <field key="037" subkey="x">englisch</field>
      <field key="050" subkey="x">Aufsatz, Sammelband</field>
      <field key="090" subkey="">004</field>
      <field key="100" subkey="">van long, ngo</field>
      <field key="331" subkey="">optimal exploitation and replenishment of a natural resource</field>
      <field key="544" subkey="n">7931-A;4</field>
      <field key="596" subkey="a">81 - 106</field>
    </SEQUENTIAL>
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