University of Illinois Urbana-Champaign

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Showing 3061–3090 of 15,779 items
Thumbnail for Vanadium in Devonian, Silurian, and Ordovician crude oils of Illinois
Vanadium in Devonian, Silurian, and Ordovician crude oils of Illinois
Mast, Richard F.; Ruch, Rodney R.; Meents, Wayne Franklin

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.