Ahmed A. K. Al-Zubaidi; Abdulmonaim H. AL-Samarrai; Fadhil M. AL-Temeemy. Estimation of Laed , Cadmium and Mercury Metals in the Blood Serum of Workers in the Coal Manufacture and Their Effects on Some Biochemical Parameters. Tikrit J. Pure Sci. 2023, 21, 80-84.