University of Illinois Urbana-Champaign

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Showing 1261–1290 of 2,454 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 Annual register. 1918-19
Annual register. 1918-19
University of Illinois at Urbana-Champaign

Thumbnail for Mackinaw River area assessment.
Mackinaw River area assessment.
Illinois Department of Natural Resources