Fertilizer resources of the United States.
62d Cong., 2d sess. Senate. Doc. 190
United States. Dept. of Agriculture.
Cameron, Frank K. (Frank Kenneth), 1869-1958
United States. Bureau of Soils.
Washington[Govt. print. off.]1912.
Referred to the Committee on agriculture and forestery and ordered printed December 18, 1911.
James Wilson, secretary of agriculture.
Milton Whitney, chief of Bureau of soils.
The preliminary report, by Frank K. Cameron, with the assistance of R.B. Moore, E.E. Free, and others, relates to phosphatic fertilizers, nitrogen fertilizers, and potash fertilizers.
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