University of Illinois Urbana-Champaign

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Showing 6571–6600 of 7,221 items
Thumbnail for Geology of the Eddyville, Stonefort, and Creal Springs Quadrangles, southern Illinois
Geology of the Eddyville, Stonefort, and Creal Springs Quadrangles, southern Illinois
Nelson, W. John; Devera, Joseph A.; Jacobson, Russell J.; Lumm, Donald K.; Peppers, Russel A.; Trask, Brian; Weibel, C. Pius; Follmer, Leon R.; Riggs, Matthew H.; Esling, Steven P.; Henderson, Elizabeth D.; Lannon, Mary S.

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 Vermilion River (Illinois River Basin) area assessment
Vermilion River (Illinois River Basin) area assessment
Illinois Deptartment of Natural Resources