Publication

1987 - U.S. Dept. of Interior, Bureau of Mines, Pittsburgh, Pa, Pennsylvania

Language

English

Word Count

3,250 words, Guess

Page Count

13 pages

Identifiers

Classifications

  • DDC622 s
  • DDC622/.8
  • LCCTN295 .U4 no. 9169
and 1 more
  • LCCTN315 .U4 no. 9169

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