“Evaluation of Cross Protective Efficacy of Commercial Vaccines against Mannheimia haemolytica in Mice: Waffa A.Ahmed, Asmaa H. Abdullah, Ansam K. Mohammed and Roua J. Mohammed” (2019) The Iraqi Journal of Veterinary Medicine, 43(1), pp. 165–170. doi:10.30539/iraqijvm.v43i1.487.