Adlawon, Arlyn Jave B., Sean Michael A. Lopez, and Katrina Mae T. Vilela. “Serologic Status of Newcastle Disease in Native Chickens by Hemagglutination Inhibition Test”. Philippine Journal of Agricultural Economics 3, no. 1 (January 4, 2019): 1–12. Accessed July 2, 2022. http://philair.ph/index.php/pjae/article/view/666.