TY - GEN AU - Selby,L A AU - Edmonds,L D AU - Hyde,L D TI - Epidemiological field studies of animal populations SN - 0008-4050 PY - 1977///0224 KW - Animal Diseases KW - epidemiology KW - Animals KW - Congenital Abnormalities KW - Female KW - Missouri KW - Population Surveillance KW - Seasons KW - Swine KW - Swine Diseases N1 - Publication Type: Journal Article ER -