Analysis of the Virulent Genes of One Newcastle Disease Viruses Isolated from Duck and its Pathogenicity Experiment in Duck
LI Xian-wei, SUN Min-hua, HE Jing, WANG Zhao-xiong, LIU Da-wei, YANG Feng, REN Tao
China Animal Husbandry & Veterinary Medicine . 2013, (9): 27 -32 .