University of Illinois Urbana-Champaign

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Showing 1891–1920 of 2,145 items
Thumbnail for Bibliography and index of Illinois geology through 1965
Bibliography and index of Illinois geology through 1965
William, H.B.; Simon, Jack A.; Lynch, Betty M.; Langenheim, Virginia A.

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

Thumbnail for Headwaters area assessment
Headwaters area assessment
Illinois Department of Natural Resources. Office of Scientific Research and Analysis

Thumbnail for Illinois classical studies. 9 (1984)
Illinois classical studies. 9 (1984)
Submitter: William Ingram

Thumbnail for Biologically Significant Illinois Streams: An Evaluation of the Streams of Illinois Based on Aquatic Biodiversity
Biologically Significant Illinois Streams: An Evaluation of the Streams of Illinois Based on Aquatic Biodiversity
Page, Lawrence M.; Cummings, Kevin S.; Mayer, Christine A.; Post, Susan L.; Retzer, Michael E.