H. S. Al-Warid, H. Z. Ali, G. . Nissan, A. . Haider, and A. . Yosef, “Use of Two Aquatic Snail Species as Bioindicators of Heavy Metals in Tigris River-Baghdad”, Iraqi Journal of Science, vol. 61, no. 7, pp. 1589–1592, Jul. 2020, doi: 10.24996/ijs.2020.61.7.6.