Report of the chief of the Bureau of Chemistry and Soils.
Report of the chief of the Bureau of Agricultural Chemistry and Engineering.
Report of the chief of the Bureau of Chemistry.
|Corporate Author:||United States.|
Washington, D.C. : U.S. Dept. of Agriculture, Bureau of Chemistry and Soils, 1928-1938.
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Fertilizers > Periodicals.
Agricultural chemistry > Periodicals.
Title from caption.
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