University of Illinois Urbana-Champaign

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Showing 121–150 of 8,466 items
Thumbnail for Application of Nitrogen and Oxygen Isotopes to Identify Sources of Nitrate, 2001
Application of Nitrogen and Oxygen Isotopes to Identify Sources of Nitrate, 2001
Roadcap, George S.; Hackley, Keith C.; Hwang, Hue-Hwa; Johnson, Thomas M.

Thumbnail for Academic Social Networking Sites: A Comparative Analysis of Their Services and Tools
Academic Social Networking Sites: A Comparative Analysis of Their Services and Tools
Espinoza Vasquez, Fatima Karely; Caicedo Bastidas, Carlos Enrique

Thumbnail for Temporal Variability of Arsenic in Municipal Well Water
Temporal Variability of Arsenic in Municipal Well Water
Holm, Thomas R.; Wilson, Steven D.; Kelly, Walton R.