Studies on the Tetravalent Inactivated Oil Emulsion Vaccine Against Newcastle Disease, Infectious Bronchitis, Egg Drop Syndrome and Avian Encephalomyelitis

• 鸡新城疫、传染性支气管炎、减蛋综合征、传染性脑脊髓炎四联油佐剂灭活疫苗的研究