Amaizik, A. S. A. and Amir, . M. A. . (2015) “Some factors affecting milk yield of Holstein-Friesian dairy cows imported to Ghot-Al Sultan Project (Libya) ”, Al-Mukhtar Journal of Sciences. Al Bayda, Libya, 30(1), pp. 99–106. doi: 10.54172/mjsc.v30i1.46.