A. H. Al-Marzani,E. , , A. O. Al-Sherwani,D. , and Sh. S. Al-Dabbagh,A. . "Effect of nutrition by using different levels of Nigella Sativa seeds on productive performance and biochemical parameters for Arabi lambs in Erbil", Kirkuk University Journal for Agricultural Sciences (KUJAS), 8, 4, 2017, 1-6. doi: 10.58928/ku17.08401