University of Illinois Urbana-Champaign

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Showing 6931–6960 of 9,269 items
Thumbnail for Big Rivers area assessment
Big Rivers area assessment
Illinois Department of Natural Resources. Office of Scientific Research and Analysis; Illinois Department of Natural Resources. State Geological Survey Division

Thumbnail for Illinois Technograph v. 028 (1913-1914)
Illinois Technograph v. 028 (1913-1914)
Submitter: Timothy Donohue

Thumbnail for Pleistocene stratigraphy of Illinois
Pleistocene stratigraphy of Illinois
Willman, Harold Bowen; Frye, John Chapman