Assad, M., Abd El-Aziz, N., El-Naenaeey, E.- sayed, Hefny, A. and Sewid, A. (2021) “EVALUATING THE EFFICACY OF A POLYVALENT INFECTIOUS CORYZA VACCINE AGAINST EMERGING AVIBACTERIUM PARAGALLINARUM SEROTYPES IN EGYPT”, Slovenian Veterinary Research, 58(24-Suppl), pp. 231–42. doi: 10.26873/SVR-1443-2021.