Published by Illinois State Geological Survey., 1979
Seller: Eryops Books, Stephenville, TX, U.S.A.
No Binding. Condition: Good. Large Folded Sheet; ex-corporate library; includes large geologic map, three smaller maps showing geology of the bedrock surface, topography of the bedrock surface, thickness of Pleistocene deposits, a columnar section with description of units, chart showing stratigraphic classification of the Pleistocene in Illinois, and two cross-sections; light creasing of edges w/ small tear on one edge; o/w in good condition. Map.