United States Department of Agriculture, Natural Resources Conservation Service ; in cooperation with United States Department of Agriculture, Forest Service, and the research division of the College of Agricultural and Life Sciences, University of Wisconsin
United States Department of Agriculture, Natural Resources Conservation Service ; in cooperation with United States Department of Agriculture, Forest Service ... [and others]
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