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    <SEQUENTIAL>
      <record key="001" att1="001" value="IHS10021230X" att2="IHS10021230X">001   IHS10021230X</record>
      <field key="037" subkey="x">englisch</field>
      <field key="050" subkey="x">Buch</field>
      <field key="076" subkey="">Formalwissenschaft</field>
      <field key="100" subkey="">wittgenstein, ludwig</field>
      <field key="331" subkey="">generally known as the blue and brown books</field>
      <field key="335" subkey="">preliminary studies for the "philosophical invenstigations"</field>
      <field key="403" subkey="">2. ed., repr.</field>
      <field key="410" subkey="">oxford</field>
      <field key="412" subkey="">basil blackwell</field>
      <field key="425" subkey="">1960</field>
      <field key="433" subkey="">xiv, 185 pp.</field>
      <field key="544" subkey="">949-A</field>
    </SEQUENTIAL>
  </section>