Krueger, William C., Matt A. Sanderson, James B. Cropper, Mary Miller-Goodman, Claudia E. Kelley, Rex D. Pieper, Pat L. Shaver, and M. J. Trlica. 2003. “Environmental Impacts Of Livestock On U. S. Grazing Lands”. Council for Agricultural Science and Technology (CAST), January. https://doi.org/10.62300/6etvzp78.