Author

Contributions

  • Loughlin, G. F. (Gerald Francis), 1880-1946 - Contributor
  • Heikes, V. C. (Victor Conrad), 1867- - Contributor

Publication

1920 - Govt. Print. Off., Washington, District of Columbia

Language

English

Word Count

168,000 words, Guess

Page Count

672 pages

Identifiers

Classifications

  • LCCQE75 .P9 no.111
  • LCCTN24.U8B8 .P9 no.111

Subjects

Series Statement

  • Professional paper / Geological Survey (U.S.) -- 111

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