University of Illinois Urbana-Champaign

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Showing 241–270 of 367 items
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.

Thumbnail for Upper Rock River area assessment
Upper Rock River area assessment
Illinois Department of Natural Resources, Office of Scientific Research; Illinois Department of Natural Resources, Illinois State Water Survey