University of Illinois Urbana-Champaign

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Showing 4621–4650 of 4,754 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 classical studies. 12 (1987)
Illinois classical studies. 12 (1987)
Submitter: William Ingram

Thumbnail for Mississippi Western Five area assessment
Mississippi Western Five area assessment
Illinois Department of Natural Resources. Office of Scientific Research and Analysis; Illinois Department of Natural Resources. State Geological Survey Division