Van Donkersgoed, Joyce, and John K. Merrill. 2013. “Efficacy of Tilmicosin and Tildipirosin for on-Arrival Treatment of Bovine Respiratory Disease in Fall-Placed Feedlot Calves in Western Canada”. The Bovine Practitioner 47 (2):146-51. https://doi.org/10.21423/bovine-vol47no2p146-151.