Saleh, M.M.S. 2017. Seasonal Variations of Some Heavy Elements in the in the Fishes Muscles Khushani Liza abu Heckel and common carp Cyprinus carpio Linnaeus and Shilluk Aspius vorax Heckeland in Euphrates River / Iraq. Al-Qadisiyah Journal of Pure Science. 18, 1 (Aug. 2017), 9-21.