University of Illinois Urbana-Champaign

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Showing 661–690 of 868 items
Thumbnail for Annual register. 1920-21
Annual register. 1920-21
University of Illinois at Urbana-Champaign

Thumbnail for Directory of Illinois mineral producers 1974
Directory of Illinois mineral producers 1974
Malhotra, Ramesh; Smith, Portia Allyn

Thumbnail for Big Muddy River area assessment
Big Muddy River area assessment
Illinois Department of Natural Resources. Office of Scientific Research and Analysis; Illinois Department of Natural Resources. State Geological Survey Division