University of Illinois Urbana-Champaign

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Showing 3391–3420 of 5,156 items
Thumbnail for Glacial tills of Northwestern Illinois
Glacial tills of Northwestern Illinois
Illinois State Geological Survey; Frye, John Chapman

Thumbnail for Effect of agriculture on Cedar Lake water quality
Effect of agriculture on Cedar Lake water quality
Roseboom, Donald P.; Evans, Ralph L.; Hill, Thomas E.

Thumbnail for Illinois Technograph v. 036 (1923-1924)
Illinois Technograph v. 036 (1923-1924)
Submitter: Timothy Donohue