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      <record key="001" att1="001" value="LIB904526707" att2="LIB904526707">001   LIB904526707</record>
      <field key="010" subkey="">LIB904519703</field>
      <field key="037" subkey="x">englisch</field>
      <field key="050" subkey="x">Aufsatz, Sammelband</field>
      <field key="090" subkey="">070</field>
      <field key="100" subkey="">psacharopoulos, g.</field>
      <field key="331" subkey="">linear programming models</field>
      <field key="544" subkey="n">X166-A;70</field>
      <field key="596" subkey="a">350 - 352</field>
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