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      <record key="001" att1="001" value="LIB904149407" att2="LIB904149407">001   LIB904149407</record>
      <field key="010" subkey="">LIB904148208</field>
      <field key="037" subkey="x">deutsch</field>
      <field key="050" subkey="x">Aufsatz, Sammelband</field>
      <field key="090" subkey="">012</field>
      <field key="100" subkey="">mitchell, b.r.</field>
      <field key="331" subkey="">statistischer anhang 1700-1914</field>
      <field key="544" subkey="n">8512-A/IV;12</field>
      <field key="596" subkey="a">485 - 534</field>
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