"SERO-PREVALENCE AND RISK FACTORS OF PESTE DES PETITS RUMINANT (PPR) IN SHEEP IN RIVER NILE AND WHITE NILE STATES, SUDAN " (2022) Journal of Veterinary Medicine and Animal Production, 3(2). موجود في: https://onlinejournals.uofk.edu/vet/article/view/1085 (تاريخ الوصول: 25 مايو 2026).