University of Illinois Urbana-Champaign

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Showing 6061–6090 of 6,970 items
Thumbnail for Petroleum industry in Illinois, 1972. Part I. Oil and gas developments
Petroleum industry in Illinois, 1972. Part I. Oil and gas developments
Illinois State Geological Survey; Van Den Berg, Jacob; Lawry, Thomas F.

Thumbnail for Mass balance of nitrogen and phosphorus in an agricultural watershed : the shallow groundwater component
Mass balance of nitrogen and phosphorus in an agricultural watershed : the shallow groundwater component
Mehnert, Edward; Dey, William S.; Hwang, Hue-Hwa; Keefer, Donald A.; Holm, Thomas R.; Johnson, Thomas M.; Beaumont, Will C.; Wander, Matthew C.F.; Sanford, Robert A.; McDonald, Jennifer M.; Shiffer, Shawn M.