University of Illinois Urbana-Champaign

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Showing 4141–4170 of 7,221 items
Thumbnail for Preliminary Report  on Ground-Water Resources of  the Chicago Region, Illinois
Preliminary Report on Ground-Water Resources of the Chicago Region, Illinois
Suter, Max; Bergstrom, Robert Edward; Smith, H.F.; Emrich, Grover Harry; Walton, William Clarence; Larson, T.E.

Thumbnail for Water Quality Features of the Upper Illinois Waterway
Water Quality Features of the Upper Illinois Waterway
Butts, Thomas A.; Evans, Ralph L.; Lin, Shun Dar