University of Illinois Urbana-Champaign

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Showing 4711–4740 of 8,568 items
Thumbnail for Assessment of Eighteen Public Ground-water Supplies in Illinois
Assessment of Eighteen Public Ground-water Supplies in Illinois
Wehrmann, H. Allen; Visocky, Adrian P.; Burris, Charles B.; Ringler, Robert W.; Brower, Ross D.

Thumbnail for Illinois mineral industry in 1945
Illinois mineral industry in 1945
Voskuil, Walter Henry; Stevens, Douglas F.; Hamrick, Nina T.