University of Illinois Urbana-Champaign

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Showing 2041–2070 of 6,200 items
Thumbnail for Oil and gas development in Illinois in 1946
Oil and gas development in Illinois in 1946
Bell, Alfred Hannam; Kline, Virginia

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