University of Illinois Urbana-Champaign

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Showing 391–420 of 1,609 items
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.

Thumbnail for Mineral production in Illinois in 1956
Mineral production in Illinois in 1956
Busch, Willis L.; Voskuil, Walter Henry

Thumbnail for Special to farm advisers / 1951
Special to farm advisers / 1951
Submitter: Howard Ding

Thumbnail for Access
Access
Submitter: Howard Ding

Thumbnail for Illinois Technograph v. 041 (1928-1929)
Illinois Technograph v. 041 (1928-1929)
Submitter: Timothy Donohue

Thumbnail for Mineral production in Illinois in 1954
Mineral production in Illinois in 1954
Voskuil, Walter Henry; Busch, Willis L.