Spar Mountain sandstone in Cooks Mills area, Coles and Douglas Counties, Illinois.

Bibliographic Details
Main Author:	Whiting, Lester Leroy
Format:	Book
Language:	English
Published:	Urbana : Illinois State Geological Survey, 1959.
Series:	Circular (Illinois State Geological Survey) ; 267.
Subjects:	Sandstone. Geology > Illinois > Coles County. Geology > Illinois > Douglas County.

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