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      <record key="001" att1="001" value="LIB904420000" att2="LIB904420000">001   LIB904420000</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="">faere, rolf</field>
      <field key="331" subkey="">laws of diminishing returns</field>
      <field key="403" subkey="">1. ed.</field>
      <field key="410" subkey="">berlin, heidelberg, new york</field>
      <field key="412" subkey="">springer-verlag</field>
      <field key="425" subkey="">1980</field>
      <field key="433" subkey="">viii, 97 pp.</field>
      <field key="451" subkey="">lecture notes in economics and mathematical systems; 176</field>
      <field key="451" subkey="h">beckmann, m. (ed.) ; kuenzi, h.p. (ed.)</field>
      <field key="461" subkey="">economic theory</field>
      <field key="517" subkey="c">from the table of contents: diminishing returns; the production technology; laws of bounded output and diminishing average</field>
      <field key="ret" subkey="u">rns; congestion, null jointness and laws of variable proportions; the law of diminishing returns at the extensive margin;</field>
      <field key="sta" subkey="n">dard notations and mathematical appendix;</field>
      <field key="540" subkey="">3-540-09744-9</field>
      <field key="544" subkey="">8994-A</field>
    </SEQUENTIAL>
  </section>