Petrographic and ceramic properties of Pennsylvanian shales of Illinois, by Ralph E. Grim. Printed by authority of the state of Illinois.
Material type:
TextPublication details: Urbana, Illinois, 1941.Description: 15 p. illusSubject(s): LOC classification: - QE471 .G74
At head of title: State of Illinois. Department of Registration and Education. Division of the State Geological Survey.
"Reprinted from the Journal of the American Ceramic Society, vol. 24, no. 1, pp. 23-28, 1941."
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