a cooperative project of the three Commonwealth Research Universities ; Temple University, editors, David J. Cuff, William J. Young ; University of Pittsburgh, [editor], Edward K. Muller ; The Pennsylvania State University, [editors] Wilbur Zelinsky, Ronald F. Abler
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