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    <SEQUENTIAL>
      <record key="001" att1="001" value="LIB902199407" att2="LIB902199407">001   LIB902199407</record>
      <field key="010" subkey="">LIB902199006</field>
      <field key="037" subkey="x">englisch</field>
      <field key="050" subkey="x">Aufsatz, Sammelband</field>
      <field key="090" subkey="">002</field>
      <field key="100" subkey="">koopmans, tjalling c.</field>
      <field key="331" subkey="">a model of a continuing state with scarce capital</field>
      <field key="544" subkey="n">4868-A;2</field>
      <field key="596" subkey="a">11 - 22</field>
    </SEQUENTIAL>
  </section>