Contributions

  • Illinois. Dept. of Registration and Education - Contributor
  • Frye, John Chapman, 1912- - Contributor

Publication

1974 - Illinois State Geological Survey, Urbana, Illinois

Language

English

Word Count

3,000 words, Guess

Page Count

12 pages

Identifiers

Classifications

  • LCCQE105 .A45 no.485

Subjects

Series Statement

  • Circular -- 485
  • Circular (Illinois State Geological Survey) -- 485.

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