by M.K. Landon ... [and others] ; prepared in cooperation with the University of Minnesota Department of Soil, Water, and Climate, the U.S. Department of Agriculture, Agricultural Research Service, and the Minnesota Pollution Control Agency
Agricultural Research Service, Cooperative State Research Service, U.S. Department of Agriculture ; in cooperation with state agricultural experiment stations and other collaborators
Agricultural Research Service, Cooperative State Research Service, U.S. Department of Agriculture ; in cooperation with state agricultural experiment stations and other collaborators
Agricultural Research Service, Cooperative State Research Service, U.S. Department of Agriculture ; in cooperation with state agricultural experiment stations and other collaborators
United States Department of Agriculture, Agricultural Research Service and Cooperative State Research Service in cooperation with State Agricultural Experiment Stations