- Seller's Description:
- Very Good. No dust jacket, as issued. slim paperback, light wear, no lettering on spine, as issued. Unknown printing. 93 p. illus. At head of title: State of Illinois, Dwight H. Green, Governor. Dept. of Registration and Education, Frank G. Thompson, Director. Division of the State Geological Survey, M. M. Leighton, Chief, Urbana. Bibliography: p. 26-28.
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