“Supplementation of Grass Hay With Groundnut Haulm and Sorghum Bran Substituting Cottonseed Cake”. The Sudan Journal Of Animal Production المجلة السودانية للانتاج الحيواني, vol. 6, no. 6, June 1993, p. 8, https://sud-jap.sd/Journal/index.php/sjap/article/view/95.