United States Department of Agriculture, Soil Conservation Service ; in cooperation with the University of Florida, Institute of Food and Agricultural Sciences, Agricultural Experiment Stations, and Soil Science Department; and the Florida Department of Agriculture and Consumer Services
United States Department of Agriculture, Soil Conservation Service ; in cooperation with Kentucky Natural Resources and Environmental Protection Cabinet, and Kentucky Agricultural Experiment Station
United States Department of Agriculture, Soil Conservation Service ; in cooperation with Purdue University, Agricultural Experiment Station, and Indiana Department of Natural Resources, State Soil Conservation Board and Division of Soil Conservation
United States Department of Agriculture, Soil Conservation Service ; in cooperation with Kentucky Natural Resources and Environmental Protection Cabinet and Kentucky Agricultural Experiment Station