by M.E. Swann ... and others ; [United States Department of Agriculture, Bureau of Plant Industry, in cooperation with Tennessee Agricultural Experiment Station and the Tennessee Valley Authority]
[by Robbie L. Flowers ... and others ; correlation by Max J. Edwards] ; United States Department of Agriculture, Soil Conservation Service, in cooperation with Tennessee Agricultural Experiment Station, Tennessee Valley Authority
[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
[by C.J. Fox ... and others ; correlation by L.E. Odom] ; United States Department of Agriculture, Soil Conservation Service in cooperation with Tennessee Agricultural Experiment Station, Tennessee Valley Authority