University of Illinois Urbana-Champaign

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Showing 4831–4860 of 4,874 items
Thumbnail for Engineering and legal aspects of land drainage in Illinois.
Engineering and legal aspects of land drainage in Illinois.
Pickels, George Wellington; Leonard, Frank Bonner

Thumbnail for Engineering and legal aspects of land drainage in Illinois.
Engineering and legal aspects of land drainage in Illinois.
Pickels, George Wellington; Leonard, Frank Bonner, b. 1891.

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