University of Illinois Urbana-Champaign

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Showing 1921–1950 of 10,216 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 Lake Pittsfield  Illinois National Nonpoint Source Monitoring Program Project
Lake Pittsfield Illinois National Nonpoint Source Monitoring Program Project
White, William P.; Beardsley, John; Devotta, Denise; Tomkins, Scott