University of Illinois Urbana-Champaign

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Showing 601–630 of 31,601 items
Thumbnail for Sand and gravel resources of Macon County, Illinois
Sand and gravel resources of Macon County, Illinois
Hester, Norman C.; Anderson, Richard C.

Thumbnail for The glacial boundary in southern Illinois
The glacial boundary in southern Illinois
Willman, Harold Bowen; Frye, John Chapman

Thumbnail for Geology for planning in northeastern Illinois. VII
Geology for planning in northeastern Illinois. VII
Taylor, S. Martin; Gilkeson, Robert H.

Thumbnail for Annual register. 1905-1906
Annual register. 1905-1906
University of Illinois at Urbana-Champaign

Thumbnail for Guide to the structure and paleozoic stratigraphy along the Lincoln fold in western Illinois
Guide to the structure and paleozoic stratigraphy along the Lincoln fold in western Illinois
Collinson, Charles William; Swann, David Henry; Willman, Harold Bowen