by C.S. Pearson ... [and others] ; United States Department of Agriculture, Agricultural Research Administration, Bureau of Plant Industry, Soils, and Agricultural Engineering
Date
1947
Series
United States. Bureau of Plant Industry, Soils and Agricultural Engineering. [Soil survey report] Series 1937 ; no. 20
[Wilber Secor ... [and others] ; United States Department of Agriculture, Soil Conservation Service ; in cooperation with the Cornell University Agricultural Experiment Station
Date
[1955]
Series
United States. Soil Conservation Service. Soil survey, ser.1939 ; no. 23
by W.E. Tharp ... [and others] ; United States Department of Agriculture, Bureau of Plant Industry in cooperation with the Cornell University Agricultural Experiment Station