Yeghanehparast, M. , , Reza Yazdi, K. , , Torabi Ghodarzi, M. , , Khojastehkey, M. , and Talebian Masoudi, A. . "SURVEY OF BLOOD SELENIUM DEPENDENT GLUTATHIONE PEROXIDASE ACTIVITY IN GRAZING EWES", Journal of Veterinary Research, 63, 3, 2008, 191-194.