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  1. 1
    Energy consumption in domestic primary copper production /
    by Rosenkranz, Rodney D.
    Published 1976
    Government Document Book
  2. 2
    Copper availability - domestic : a minerals availibility system appraisal /
    Government Document Book
  3. 3
    The availability of primary copper in market economy countries : a minerals availability appraisal /
    by Porter, K. E. (Kenneth E.)
    Published 1992
    Government Document Microform Book
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