University of Illinois Urbana-Champaign

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Showing 391–405 of 405 items
Thumbnail for Pennsylvanian fusulinidae of Illinois,
Pennsylvanian fusulinidae of Illinois,
Dunbar, Carl O.; Henbest, Lloyd G.; Weller, J. Marvin

Thumbnail for Vermilion River area assessment
Vermilion River area assessment
Illinois Department of Natural Resources