ID:DA07504501
United States. Soils, Bureau of
United States. Department of Agriculture. Division of Agricultural Soils
United States. Department of Agriculture. Division of Soils
United States. Department of Agriculture. Bureau of Chemistry and Soils
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by C.F. Marbut
Government Printing Office 1935 Atlas of American agriculture / prepared under the supervision of O.E. Baker pt. 3
Available at 1 libraries
by Milton Whitney ; with accompanying papers by assistants in charge of field parties
Govt. Print. Off. 1901-1920
1901, maps , 1902 , 1902, maps , 1904 , 1904, maps , 1906 , 1908, maps , 1919 , 1919, maps , 1920 , 1920, maps
Available at 7 libraries
U.S. Department of Agriculture, Bureau of Soils
G.P.O.
Available at 9 libraries