University of Illinois Urbana-Champaign

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Showing 6661–6690 of 7,068 items
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 Illinois Technograph v. 041 (1928-1929)
Illinois Technograph v. 041 (1928-1929)
Submitter: Timothy Donohue