University of Illinois Urbana-Champaign

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Showing 5101–5130 of 5,557 items
Thumbnail for Lower Rock River area assessment
Lower Rock River area assessment
Submitter: Steven Mccauley

Thumbnail for Vermilion River (Illinois River Basin) area assessment
Vermilion River (Illinois River Basin) area assessment
Illinois Deptartment of Natural Resources

Thumbnail for Year-book for 1907.
Year-book for 1907.
Illinois State Geological Survey