Contributions

  • Glass, H. D. joint author. - Contributor
  • Willman, H. B. 1901- joint author. - Contributor

Publication

1968 - Illinois State Geological Survey, Urbana, Illinois

Language

English

Word Count

11,000 words, Guess

Page Count

44 pages

Identifiers

Classifications

  • DDC552/.5
  • LCCQE105 .A45 no. 427

Subjects

Places

Series Statement

  • Illinois. State Geological Survey. Circular
  • 427
  • Circular (Illinois State Geological Survey) ;

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