W. Rodney Cooper, Ph.D.
W. Rodney Cooper, Ph.D., research entomologist at the U.S. Department of Agriculture’s Yakima Agricultural Research Laboratory collects psyllids in the early spring in Wapato, Washington. (Photo credit: Pauline Anderson)
W. Rodney Cooper, Ph.D., research entomologist at the U.S. Department of Agriculture’s Yakima Agricultural Research Laboratory collects psyllids in the early spring in Wapato, Washington. (Photo credit: Pauline Anderson)