Amstutz, H. E., R. L. Morter, and C. H. Armstrong. “Antimicrobial Resistance of Strains of Pasteurella Hemolytica Isolated from Feedlot Cattle”. The Bovine Practitioner 1982, no. 17 (November 1, 1982): 52–55. Accessed August 12, 2024. https://bovine-ojs-tamu.tdl.org/bovine/article/view/2695.