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      <record key="001" att1="001" value="LIB905140503" att2="LIB905140503">001   LIB905140503</record>
      <field key="010" subkey="">LIB905139902</field>
      <field key="037" subkey="x">englisch</field>
      <field key="050" subkey="x">Aufsatz, Sammelband</field>
      <field key="090" subkey="">006</field>
      <field key="100" subkey="">manning, richard</field>
      <field key="103" subkey="">department of economics, university of canterbury, new zealand</field>
      <field key="331" subkey="">nonsubstitution over the production-possibility frontier</field>
      <field key="544" subkey="n">10036-A;6</field>
      <field key="596" subkey="a">51 - 67</field>
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