University of Illinois Urbana-Champaign

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Showing 1051–1080 of 8,580 items
Thumbnail for Major Watersheds of Illinois
Major Watersheds of Illinois
Illinois State Water Survey

Thumbnail for Ottawa geological science field trip
Ottawa geological science field trip
Reinertsen, David L.; Smith, Lisa R.

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 Guide to the papers in the John Hunter Walker collection, 1911-1953
Guide to the papers in the John Hunter Walker collection, 1911-1953
Carlson, Douglas W.; Pausch, Lois M.; Robertson, Margaret W.