University of Illinois Urbana-Champaign

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Showing 1501–1530 of 1,773 items
Thumbnail for Handbook of Illinois stratigraphy
Handbook of Illinois stratigraphy
Willman, Harold Bowen; Atherton, Elwood; Buschbach, T.C.; Collinson, Charles William; Frye, John Chapman; Hopkins, M.E.; Lineback, Jerry Alvin; Simon, Jack A.

Thumbnail for Upper Sangamon River area assessment
Upper Sangamon River area assessment
Submitter: Steven Mccauley