Sirwan Yassin , Sazan, and Janan Jabbar Toma. “Concentration of Heavy Metals in Some Springs in the Shaqlawa District, Erbil Governorate, Kurdistan Region of Iraq”. Tikrit Journal of Pure Science 31, no. 2 (April 25, 2026): 49–57. Accessed April 25, 2026. https://tjpsj.org/index.php/tjps/article/view/1978.