“A Comparison of Two Mannheimia Haemolytica Vaccination Strategies in Freshly Weaned Southeastern Feedlot Heifers”. The Bovine Practitioner 43, no. 1 (December 31, 2008): 27–31. Accessed November 22, 2024. https://bovine-ojs-tamu.tdl.org/bovine/article/view/2731.