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
cosponsored by U.S. Geological Survey, Agricultural Research Service, Soil Conservation Serivce, Reston, Virginia, February 5-8, 1990 ; compiled by Madge Ertel
presented by USDA Soil Conservation Service, US Environmental Protection Agency in cooperation with Winrock International ; produced and directed by David Wann, Yasukumi Christopher Tribble ; created and written by David Wann