El-Shawadfi, A. E., El-Khyat, F. and El-Gohary, A.-G. (2019) “IDENTIFICATION OF VIRULENT NEWCASTLE DISEASE VIRUSES IN BROILERS IN KAFRELSHEIKH GOVERNORATE THROUGH THE YEAR 2017”, Slovenian Veterinary Research, 56(22-Suppl). doi: 10.26873/SVR-757-2019.