“The performance of Friesian and Jersey cows in Dairy units Benghazi and Eljabel Elakhder in Libya ” (2000) The Sudan Journal Of Animal Production المجلة السودانية للانتاج الحيواني, 13(13), p. 5. Available at: https://sud-jap.sd/Journal/index.php/sjap/article/view/114 (Accessed: 31 October 2026).