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    <SEQUENTIAL>
      <record key="001" att1="001" value="LIB905919403" att2="LIB905919403">001   LIB905919403</record>
      <field key="037" subkey="x">englisch</field>
      <field key="050" subkey="x">Buch</field>
      <field key="076" subkey="">Ökonomie</field>
      <field key="100" subkey="">leamer, edward e.</field>
      <field key="331" subkey="">sources of international comparative advantage</field>
      <field key="335" subkey="">theory and evidence</field>
      <field key="403" subkey="">2. pr.</field>
      <field key="410" subkey="">cambridge, massachusetts, london</field>
      <field key="412" subkey="">the mit press</field>
      <field key="425" subkey="">1987</field>
      <field key="433" subkey="">xix, 353 pp.</field>
      <field key="544" subkey="">11225-A</field>
    </SEQUENTIAL>
  </section>