[by K.V. Goodman ... and others] ; United States Department of Agriculture, Soil Conservation Service in cooperation with Pennsylvania Agricultural Experiment Station
[by Glenn Fisher ... and others] ; United States Department of Agriculture, Soil Conservation Service in cooperation with Pennsylvania State University College of Agriculture and Experiment Station and Pennsylvania Department of Agriculture, Soil Conservation Commission
by R. T. A. Burke ... [and others] ; United States Department of Agriculture, Agricultural Research Administration, Bureau of Plant Industry, Soils, and Agricultural Engineering
Date
[1946]
Series
[U. S. Bureau of plant industry, soils, and agricultural engineering. Soil survey report] Series 1936 ; no. 25
by B.H. Hendrickson ... [and others] ; Bureau of Chemistry and Soils ; in cooperation with the Pennsylvania State College School of Agriculture and Experiment Station
by Howard Wm. Higbee ... [and others] ; United States Department of Agriculture, Agricultural research Administration, Bureau of Plant Industry, Soils, and Agricultural Engineering in cooperation with the Pennsylvania State College School of Agriculture and Experiment Station
by R.T. Avon Burke ... [and others] ; United States Department of Agriculture, Bureau of Chemistry and Soils ; in cooperation with the Pennsylvania State College School of Agriculture and Experiment Station
by B.H. Hendrickson ... [and others] ; United States Department of Agriculture, Bureau of Chemistry and Soils ; in cooperation with the Pennsylvania State College School of Agriculture and Experiment Station