Troutt, H. F, and H. E. Amstutz. “Physiological Aspects of the Omasum and Abomasum”. The Bovine Practitioner 1972, no. 7 (November 1, 1972): 2–7. Accessed July 14, 2024. https://bovine-ojs-tamu.tdl.org/bovine/article/view/1796.