University of Illinois Urbana-Champaign

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Showing 4981–5010 of 5,085 items
Thumbnail for Fox River area assessment
Fox River area assessment
Illinois Department of Natural Resources. Office of Scientific Research and Analysis

Thumbnail for Year-book for 1909
Year-book for 1909
Illinois State Geological Survey

Thumbnail for Rock River Area Assessment
Rock River Area Assessment
Illinois Department of Natural Resources