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      <record key="001" att1="001" value="LIB900132309" att2="LIB900132309">001   LIB900132309</record>
      <field key="010" subkey="">LIB900131706</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="">widman, lawrence e.</field>
      <field key="331" subkey="">semi-quantitative 'close-enough' systems dynamics models: an alternative to qualitative simulation</field>
      <field key="544" subkey="n">12955-A;6</field>
      <field key="596" subkey="a">159 - 188</field>
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