University of Illinois Urbana-Champaign

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Showing 4351–4380 of 4,553 items
Thumbnail for Geology of the fluorspar deposits of Illinois
Geology of the fluorspar deposits of Illinois
Weller, James Marvin; Grogan, Robert Mann; Tippie, Frank Emerson, joint author

Thumbnail for Sinkhole Plain area assessment
Sinkhole Plain area assessment
Submitter: Steven Mccauley