Khanam, J., Rahman, M. M. ., Fakhruzzaman, M., & Rumi, N. A. . (2018). Determination of efficacy of different Newcastle disease vaccine used in broiler chickens. Asian-Australasian Journal of Bioscience and Biotechnology, 3(1), 52–58. https://doi.org/10.3329/aajbb.v3i1.64753