Geologic map of the Creal Springs quadrangle, Illinois /

Bibliographic Details
Main Author:	Trask, C. Brian
Corporate Authors:	Illinois State Geological Survey, Geological Survey (U.S.), Cooperative Geological Mapping Program (U.S.)
Other Authors:	Jacobson, R. J.
Format:	Map
Language:	English
Published:	Champaign, Ill. : Illinois Dept. of Energy and Natural Resources, Illinois State Geological Survey, 1990.
Series:	Illinois geologic quadrangle map ; map IGQ-4.
Subjects:	Illinois > Geology > Creal Springs Region > Maps. Geology > Illinois > Johnson County > Maps. Geology > Illinois > Williamson County > Maps.

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