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By: Phillips, Ralph W., - Spencer, D. A. (Damon Alvin), - Speelman, S. R. (Sanford Reed), - Black, W. H. (William Henry), - Williams, J. O. (John Oscar), - Earle, I. P.Edition:Publication info: [Place of publication not identified], Bureau of Animal Industry, United States, Department of Agriculture, 1942Volume: no.52Series:Holding Institution: U.S. Department of Agriculture, National Agricultural LibrarySubjects:BHL Collections: