Stratigraphy and geologic structure of Northern Illinois, with special reference to underground water supplies, by R. T. Thwaites.
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TextPublication details: Urbana, Illinois [Springfield, Jeffersons Printing and Stationery Co.] 1927.Description: 49 p. illusSubject(s): LOC classification: - QE105 .T5
At head of title: State of Illinois. Department of Registration and Education. Division of the State Geological Survey.
Plates folded in pocket.
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