AHMED, Waffa A. 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. The Iraqi Journal of Veterinary Medicine, Baghdad, Iraq., v. 43, n. 1, p. 165–170, 2019. DOI: 10.30539/iraqijvm.v43i1.487. Disponível em: https://www.jcovm.uobaghdad.edu.iq/index.php/Iraqijvm/article/view/487.. Acesso em: 4 jan. 2026.