TY - GEN AU - Bergol'ts,V M TI - [Virus etiology and the epidemiology of leukosis] SN - 0507-4088 PY - 1969///0904 KW - Animals KW - Avian Leukosis KW - etiology KW - Cattle KW - Chickens KW - Complement Fixation Tests KW - Humans KW - Leukemia KW - Mice KW - Oncogenic Viruses N1 - Publication Type: Journal Article; Review ER -