Sulaiman, Thoraya, 		El Obied, Greeballa, AND 		Siddig, Fawgia.
" Effect of a medicated home-made lick block on the performance of dairy cows in the Rahad Scheme" <em>المجلة الزراعية</em> [على الإنترنت], المجلد 9 العدد 1 (1 January 2011)