Author

Contributions

  • Hood, M. - Contributor
  • Thimons, Edward D. - Contributor

Publication

1987 - U.S. Dept. of Interior, Bureau of Mines, Pgh. [i.e. Pittsburgh] Pa, Pennsylvania

Language

English

Word Count

2,500 words, Guess

Page Count

10 pages

Identifiers

Classifications

  • DDC622 s
  • LCCTN295 .U4 no. 9164

Subjects

Series Statement

  • Information circular ;

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