Al-Hamish, M., موسى, R. Abdul Jabbar, ریاض, S. Al-Obaidi, and صالح. “Estimation of Cadmium, Zinc and Copper in the Blood of Workers in the Fertilizer Industry”. Journal of Education and Science (JES), vol. 19, no. 1, Jan. 2007, pp. 42-50, doi:10.33899/edusj.2007.51016.