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 (Mar. 2019). DOI:https://doi.org/10.26873/SVR-757-2019.