TY - BOOK TI - Keeping livestock healthy T2 - Yearbook of agriculture U1 - 636.0894 22 PY - 1942/// CY - Washington D.C. PB - U.S. Dept. of Agriculture KW - Veterinary medicine KW - United States KW - Domestic animals KW - Livestock KW - Diseases N1 - Includes bibliographies and index ER -