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By: Graham, H. M. - Ertle, L. R. - Negm, A. A. - United States. Animal and Plant Health Inspection Service. Veterinary Services.Edition:Publication info: Beltsville, Md, U.S. Dept. of Agriculture, Agricultural Research Service, 1984Volume: no.30Series:Holding Institution: U.S. Department of Agriculture, National Agricultural LibrarySubjects:BHL Collections: