"Effect of Injection of Calcium Gluconate Solution on Fertility Traits of Postpartum Cross-Bred Dairy Cows in Khartoum, Sudan" (2023) Journal of Veterinary Medicine and Animal Production, 11. موجود في: https://onlinejournals.uofk.edu/vet/article/view/1357 (تاريخ الوصول: 25 مايو 2026).