School of Geographical Sciences, Arizona State University P.O. Box 870104, Tempe, AZ 85287-0104 United States ; Southwest Watershed Research Center, Agricultural Research Service, U.S. Department of Agriculture, Tucson, AZ 85719 United States
Southwest Watershed Research Center, Agricultural Research Service, U.S. Department of Agriculture, Tucson, AZ 85719 United States
Southwest Watershed Research Center, Agricultural Research Service, U.S. Department of Agriculture, Tucson, AZ 85719 United States
School of Geographical Sciences, Arizona State University P.O. Box 870104, Tempe, AZ 85287-0104 United States