USDA / Department of Crop and Soil Sciences / •Weed Science Society of America and Univ. of Illinois / Univ. of Pennsylvania School of Veterinary Medicine and Drs. / Penn State University / Texas A&M / Department of Natural Resources-King Co. / •Penn State Univ. / Pennsylvania Department of Agriculture / •Virginia Tech Univ. / •Cornell Univ. / /
Person
William Curran / Richard Davies / James Manhart / Peter Hyypio / Hugh Wilson / Kevin Bradley / Robert Poppenga / Edward Cope / Herbarium Hyypio / Mimi Kamp / /