University of Illinois Urbana-Champaign

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Showing 3781–3810 of 4,243 items
Thumbnail for Kishwaukee River area assessment
Kishwaukee River area assessment
Illinois Department of Natural Resources. Office of Scientific Research and Analysis

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

Thumbnail for The mineral content of Illinois waters
The mineral content of Illinois waters
Bartow, Edward; Udden, Johan August; Parr, Samuel Wilson; Palmer, George Thomas