United States Department of Agriculture, Soil Conservation Service ; in cooperation with University of Florida, Institute of Food and Agricultural Sciences, Agricultural Experiment Stations ; and Soil Science Department ; and Florida Department of Agriculture and Consumer Services
cosponsored by U.S. Geological Survey, Agricultural Research Service, Soil Conservation Serivce, Reston, Virginia, February 5-8, 1990 ; compiled by Madge Ertel
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
U.S. Department of Agriculture, Soil Conservation Service ; in cooperation with U.S. Department of the Interior, Bureau of Land Management, and Utah Agricultural Experiment Station
United States Department of Agriculture, Soil Conservation Service ; in cooperation with Kentucky Natural Resources and Environmental Protection Cabinet ; and Kentucky Agricultural Experiment Station