University of Illinois Urbana-Champaign

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Thumbnail for GeoSciences / 1989-93
GeoSciences / 1989-93
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.