Pathology of Experimental Velogenic Viscerotropic Newcastle Disease (VVND) in House Sparrows and Australian Parrots: Disease in House Sparrows and Parrots. Pakistan Journal of Scientific & Industrial Research. 2023;66(3):239-248. Accessed March 7, 2026. https://biostaging.pjsir.org/index.php/biological-sciences/article/view/3034