United States Department of Agriculture, Natural Resources Conservation Service ; in cooperation with United States Department of Agriculture, Forest Service ... [and others]
[by Wallace J. Camp ... and others], United States Department of Agriculture, Soil Conservation Service and Forest Service, in cooperation with South Carolina Agricultural Experiment Station and the South Carolina Land Resources Conservation Commission
United States Department of Agriculture, Natural Resources Conservation Service ; in cooperation with Virginia Polytechnic Institute and State University, and United States Department of Agriculture, Forest Service