[by Ralph C. Cole ... and others] ; United States Department of Agriculture, Soil Conservation Service in cooperation with the University of California Agricultural Experiment Station
[by R.A. Gardner ... and others] ; United States Department of Agriculture, Soil Conservation Service in cooperation with the California Agricultural Experiment Station
by C.A. Mogen ... [and others] ; United States Department of Agriculture in cooperation with the University of Idaho College of Agriculture and Agricultural Experiment Station
[by Marvin E. Olsen ... and others] ; United States Department of Agriculture, Soil Conservation Service in cooperation with Utah Agricultural Experiment Station
[by E.H. Templin ... and others] ; United States Department of Agriculture, Soil Conservation Service in cooperation with the Texas Agricultural Experiment Station
[by Ralph G. Leighty ... and others] ; United States Department of Agriculture, Soil Conservation Service in cooperation with the Florida Agricultural Experiment Station
[by A.J. Cline ... and others] ; United States Department of Agriculture, Soil Conservation Service in cooperation with the Kansas Agricultural Experiment Station
by Ralph C. Cole ... [and others] ; United States Department of Agriculture, Bureau of Plant Industry, Soils, and Agricultural Engineering and Soil Conservation Service in cooperation with the University of California Agricultural Experiment Station
[by L.G. Brackeen ... and others] ; United States Department of Agriculture, Soil Conservation Service in cooperation with Alabama Department of Agriculture and Industries
[by H.H. Perry ... and others] ; United States Department of Agriculture, Soil Conservation Service in cooperation with the Virginia Agricultural Experiment Station and the Tennessee Valley Authority
[by B.L. Matzek ... and others] ; United States Department of Agriculture, Soil Conservation Service, in cooperation with the Tennessee Agricultural Experiment Station and the Tennessee Valley Authority
[by Frank F. Harradine ... and others] ; United States Department of Agriculture, Soil Conservation Service in cooperation with the University of California Agricultural Experiment Station
[by Robert Wildermuth ... and others] ; United States Department of Agriculture, Soil Conservation Service in cooperation with the Ohio Agricultural Experiment Station
by M. H. Layton ... [and others] ; United States Department of Agriculture, Soil Conservation Service ; in cooperation with the University of Nebraska Conservation and Survey Division
[by Robert Wildermuth ... and others] ; United States Department of Agriculture, Soil Conservation Service in cooperation with the Tennessee Agricultural Experiment Station and the Tennessee Valley Authority
prepared by the Department of Agronomy, Cornell University, in cooperation with the U.S. Department of Agriculture, Soil Conservation Service, for the State of New York, Office of Planning Coordination