University of Illinois Urbana-Champaign

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Showing 2761–2790 of 2,805 items
Thumbnail for Pennsylvanian fusulinidae of Illinois,
Pennsylvanian fusulinidae of Illinois,
Dunbar, Carl O.; Henbest, Lloyd G.; Weller, J. Marvin

Thumbnail for Mackinaw River area assessment.
Mackinaw River area assessment.
Illinois Department of Natural Resources

Thumbnail for Illinois River Bluffs area assessment
Illinois River Bluffs area assessment
Submitter: Sarah Shreeves