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    <SEQUENTIAL>
      <record key="001" att1="001" value="LIB902411305" att2="LIB902411305">001   LIB902411305</record>
      <field key="010" subkey="">LIB902410507</field>
      <field key="037" subkey="x">englisch</field>
      <field key="050" subkey="x">Aufsatz, Sammelband</field>
      <field key="090" subkey="">008</field>
      <field key="100" subkey="">olsen, erling</field>
      <field key="331" subkey="">regional income differences within a common market</field>
      <field key="525" subkey="">reprinted from: papers and proceedings of the regional science association, xiv (1965), pp. 35-41</field>
      <field key="544" subkey="n">5279-A;8</field>
      <field key="596" subkey="a">107 - 114</field>
    </SEQUENTIAL>
  </section>