University of Illinois Urbana-Champaign

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Showing 9971–10000 of 81,966 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 Geodes : small treasure vaults in Illinois
Geodes : small treasure vaults in Illinois
Reinertsen, David L.; Beaty, D. Scott; Goodwin, Jonathan H.