“Air Sacs Of Kuttanad Ducks (Anas Platyrhynchos Domesticus): Contrast Radiographic And Corrosion Casting Study”. Applied Biological Research 18, no. 1 (May 25, 2016): 91–92. Accessed August 25, 2024. https://acspublisher.com/journals/index.php/abr/article/view/12215.