Contributions

  • Epstein, Anita G., 1937- joint author. - Contributor
  • Pennsylvania. Bureau of Topographic and Geologic Survey. - Contributor

Publication

1972 - U.S. Govt. Print. Off., Washington, District of Columbia

Language

English

Word Count

11,250 words, Guess

Page Count

45 pages

Identifiers

Classifications

  • DDC557.3/08 s
  • DDC551.7/3/097482
  • LCCQE663 .E65

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