The enrichment of ore deposits / by William Harvey Emmons.

By: Material type: TextTextSeries: U. S. Geological survey. Bulletin 625Publication details: Washington : Govt. print. off., 1917.Description: 530 p. : ill., vii pl (1 fold) diagr., ; 24 cmSubject(s): LOC classification:
  • TN263 .E48
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At head of title: Dept. of the interior.

Bibliography: p. 20-33.

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