University of Illinois Urbana-Champaign

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Showing 1471–1500 of 2,031 items
Thumbnail for Lower Rock River area assessment
Lower Rock River area assessment
Submitter: Steven Mccauley

Thumbnail for Classification of the Pennsylvanian strata of Illinois
Classification of the Pennsylvanian strata of Illinois
Kosanke, Robert M.; Simon, J.A.; Wanless, H.R.; Willman, H.B.

Thumbnail for Agronomy facts / 2
Agronomy facts / 2
Submitter: Howard Ding

Thumbnail for Driftless area assessment
Driftless area assessment
Submitter: Steven Mccauley