University of Illinois Urbana-Champaign

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Showing 2341–2370 of 2,753 items
Thumbnail for Mackinaw River area assessment.
Mackinaw River area assessment.
Illinois Department of Natural Resources

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.

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Spoken words
Hall, William S.; Nagy, William E.; Linn, Robert L.