Antibody Levels against Newcastle Disease Virus, Infectious Bursal Disease Virus and Avian Influenza Virus in Rural Chickens in Viet Nam

Tran Quang Vui, J. E. Lohr, M. N. Kyule, K.-H. Zessin and M. P. O. Baumann

International Journal of Poultry Science 1 ( 5 ): 127 - 132 , 2002