University of Illinois Urbana-Champaign

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Showing 631–660 of 3,468 items
Thumbnail for Sand and gravel resources of Mason County, Illinois
Sand and gravel resources of Mason County, Illinois
Labotka, Theodore C.; Hester, Norman C.

Thumbnail for Retrospect and Prospect
Retrospect and Prospect
Clapp, Verner W.

Thumbnail for Oil and gas development in Illinois in 1943
Oil and gas development in Illinois in 1943
Bell, Alfred Hannam; Carter, Charles William