Allen, T.H., Johnson, E.G., Edmonds, M.D. and Gould, J.A. 2013. Influence of tilmicosin on quantified pulmonary concentrations of three bacterial pathogens in calves with naturally-occurring bovine respiratory disease. The Bovine Practitioner. 47, 1 (Feb. 2013), 65–72. DOI:https://doi.org/10.21423/bovine-vol47no1p65-72.