University of Illinois Urbana-Champaign

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Showing 4951–4980 of 5,139 items
Thumbnail for Catalog of Devonian and deeper tests in southern Illinois
Catalog of Devonian and deeper tests in southern Illinois
Stevenson, D.L.; Keys, John N.; Cluff, Robert M.

Thumbnail for Sugar-Pecatonica area assessment
Sugar-Pecatonica area assessment
Submitter: Steven Mccauley

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