[by Russell R. Sanders ... and others] ; United States Department of Agriculture, Soil Conservation Service in cooperation with Texas Agricultural Experiment Station
[by Irvin C. Mowery ... and others] ; United States Department of Agriculture, Soil Conservation Service in cooperation with Texas 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 Irwin C. Mowery ... and others] ; United States Department of Agriculture, Soil Conservation Service in cooperation with Texas Agricultural Experiment Station
[by Anthony J. Welker ... and others ; correlation by Harvey Oakes] ; United States Department of Agriculture, Soil Conservation Service in cooperation with Texas Agricultural Experiment Station