Studies on the Tetravalent Inactivated Oil Emulsion Vaccine Against Newcastle Disease,Infectious Bronchitis, Egg Drop Syndrome and Avian Encephalomyelitis
JIANG Bei-yu, LIU Yue-huan, ZHENG Shi-Ian, JING Xiao-dong, YAO Ying, BAI Li-ping
ACTA AGRICULTURAE BOREALI-SINICA . 2003, (3): 106 -113 .  DOI: 10.3321/j.issn:1000-7091.2003.03.030