For questions, comments or suggestions, contact:

Dr. Kenneth Cassman
Nebraska Center for Energy Science Research, University of Nebraska-Lincoln
P.O. Box 830915, Lincoln, NE 68583-0915, USA
Phone: +1-402-472-5554, Fax: +1-402-472-7904
E-mail: kcassman1@unl.edu

Dr. Daniel Walters
Department of Agronomy & Horticulture, University of Nebraska-Lincoln
P.O. Box 830915, Lincoln, NE 68583-0915, USA
Phone: +1-402-472-1506, Fax: +1-402-472-7904
E-mail: dwalters@unl.edu