University of Illinois Urbana-Champaign

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Showing 271–300 of 3,353 items
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Additional Content
Submitter: Howard Ding

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 Physiographic divisions of Illinois
Physiographic divisions of Illinois
Leighton, Morris M.; Ekblaw, George E.; Horberg, Leland

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Three Textual Notes
Finch, Chauncey E.

Thumbnail for Portland-cement resources of Illinois
Portland-cement resources of Illinois
Bleininger, Albert; Lines, Edwin Fuller; Layman, F.E.