University of Illinois Urbana-Champaign

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Showing 1–30 of 588 items
Thumbnail for Mississippian border of eastern interior basin
Mississippian border of eastern interior basin
Weller, James Marvin; Sutton, Arle H.

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