University of Illinois Urbana-Champaign

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Showing 961–990 of 1,627 items
Thumbnail for Illinois mineral industry in 1944
Illinois mineral industry in 1944
Voskuil, Walter Henry; Stevens, Douglas F.

Thumbnail for Geology for planning in Boone and Winnebago Counties
Geology for planning in Boone and Winnebago Counties
Berg, Richard C.; Kempton, John Paul; Stecyk, Amy N.; Goodwin, Jonathan H.; Glockner, Mary

Thumbnail for Illinois Breeding Bird Atlas
Illinois Breeding Bird Atlas
Kleen, Vernon M.; Cordle, Liane; Montgomery, Robert A.

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