Mead, A, Lees, P, Mitchell, J, Rycroft, A N, Standing, J F, Toutain, P L, Pelligand, L, "Differential susceptibility to tetracycline, oxytetracycline and doxycycline of the calf pathogens Mannheimia haemolytica and Pasteurella multocida in three growth media", JOURNAL OF VETERINARY PHARMACOLOGY AND THERAPEUTICS, 2019