University of Illinois Urbana-Champaign

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Showing 4621–4650 of 28,215 items
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.

Thumbnail for Quaternary records of southwestern Illinois and adjacent Missouri.
Quaternary records of southwestern Illinois and adjacent Missouri.
Graham, Russell W.; Styles, Bonnie W.; Saunders, Jeffrey J.; Wiant, Michael D.; McKay, E. Donald, III; Styles, Thomas R.; Hajic, Edwin R.