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    <SEQUENTIAL>
      <record key="001" att1="001" value="LIB902129405" att2="LIB902129405">001   LIB902129405</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="">puckett, richard h.</field>
      <field key="331" subkey="">introduction to mathematical economics</field>
      <field key="335" subkey="">matrix algebra and linear economic models</field>
      <field key="403" subkey="">1. ed.</field>
      <field key="410" subkey="">lexington, massachusetts</field>
      <field key="412" subkey="">d.c. heath and company</field>
      <field key="425" subkey="">1971</field>
      <field key="433" subkey="">viii, 276 pp.</field>
      <field key="517" subkey="c">from the table of contents: basic concepts; inverses: properties and applications; input-output models; rank and solutions of</field>
      <field key="lin" subkey="e">ar equations; determinants; linear programming: computational techniques; linear programming: a continuation of the</field>
      <field key="dis" subkey="c">ussion; characteristic equations, similarity transformations, and quadratic forms; problems of production and growth;</field>
      <field key="544" subkey="">4750-A</field>
    </SEQUENTIAL>
  </section>