University of Illinois Urbana-Champaign

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Showing 601–630 of 2,803 items
Thumbnail for Geology and mineral resources of the Marseilles, Ottawa, and Streator quadrangles,
Geology and mineral resources of the Marseilles, Ottawa, and Streator quadrangles,
Willman, Harold Bowen; Payne, James Norman; Voskuil, Walter Henry

Thumbnail for Illinois mineral industry in 1944
Illinois mineral industry in 1944
Voskuil, Walter Henry; Stevens, Douglas F.

Thumbnail for Illinois River Bluffs area assessment
Illinois River Bluffs area assessment
Submitter: Sarah Shreeves