Clarence A. Rotz (Al)
Agricultural Engineer
al dot rotz at ars dot usda dot gov
Phone: (814) 865-2049
Fax: (814) 863-0939
CURTIN ROAD, BUILDING 3702
PASTURE SYSTEMS & WATERSHED MANAGEMENT RESEARCH
UNIVERSITY PARK, PA, 16802-3702
Last Modified: 05/22/2013