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By: Ackerman, William L. - Joley, Lloyd E. - Halsey, Dean. - United States. Bureau of Plant Industry, Soils, and Agricultural Engineering.Edition:Publication info: [Washington, D.C.], Bureau of Plant Industry, Soils and Agricultural Engineering, U.S. Department of Agriculture, [1955]Volume: no.2Series:Holding Institution: U.S. Department of Agriculture, National Agricultural LibrarySubjects:BHL Collections: