Immunization Program of Newcastle Disease, Infectious Bronchitis and Avian Influenza(H9 Subtype)Vaccine, Inactivated (Strain La Sota +Strain M41 +Strain SS/94)
LIN Qi-ping, CHEN Rui-ai, HUANG Wen-ke, YAN Jie-zhen
China Animal Husbandry & Veterinary Medicine . 2012, (6): 192 -196 .