University of Illinois Urbana-Champaign

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Showing 151–180 of 391 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 Directory of Illinois mineral producers 1974
Directory of Illinois mineral producers 1974
Malhotra, Ramesh; Smith, Portia Allyn