United States Department of Agriculture, Soil Conservation Service ; in cooperation with Ohio Department of Natural Resources, Division of Soil and Water Conservation; and Ohio Agricultural Research and Development Center
United States Department of Agriculture, Soil Conservation Service, in cooperation with the Louisiana Agricultural Experiment Station and the Louisiana Soil and Water Conservation Committee
United States Department of Agriculture, Forest Service and Soil Conservation Service ; in cooperation with Colorado Agricultural Experiment Station, Colorado State University
United States Department of Agriculture, Forest Service and Soil Conservation Service ; in cooperation with Mississippi Agricultural and Forestry Experiment Station
United States Department of Agriculture, Soil Conservation Service ; in cooperation with North Dakota Agricultural Experiment Station, North Dakota Cooperative Extension Service, and North Dakota State Soil Conservation Committee
United States Department of Agriculture, Soil Conservation Service ; in cooperation with Ohio Department of Natural Resources, Division of Water and Soil Conservation, Ohio Agricultural Research and Development Center; and Ohio Cooperative Extension Service