University of Illinois Urbana-Champaign

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Showing 8941–8970 of 12,301 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 Oil and gas development in Illinois during 1952
Oil and gas development in Illinois during 1952
Bell, Alfred Hannam; Kline, Virginia