University of Illinois Urbana-Champaign

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Showing 1591–1620 of 4,852 items
Thumbnail for Big Muddy River area assessment
Big Muddy 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 Potential surface water reservoirs of Northern Illinois
Potential surface water reservoirs of Northern Illinois
Dawes, Julius Henry; Terstriep, Michael Lee