University of Illinois Urbana-Champaign

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Showing 691–720 of 774 items
Thumbnail for Catalog of Devonian and deeper tests in central Illinois
Catalog of Devonian and deeper tests in central Illinois
Stevenson, D.L.; Keys, John N.; Cluff, Robert M.

Thumbnail for Farm radio news. 1955
Farm radio news. 1955
Submitter: Howard Ding

Thumbnail for Upper Des Plaines River area assessment
Upper Des Plaines River area assessment
Illinois Department of Natural Resources. Office of Scientific Research and Analysis; Illinois Department of Natural Resources. State Geological Survey Division

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