Ahmed, Shahyan, and Mahmood Hasan. “Determination of HeaDetermination of Some Heavy Metals in Three Fish Species from Duhok City Markets in Kurdistan of Iraq”. Science Journal of University of Zakho 7, no. 4 (October 30, 2019): 152-157. Accessed February 22, 2020. https://sjuoz.uoz.edu.krd/index.php/sjuoz/article/view/621.