Environmental assessment of heavy metals in surface and groundwater at Samarra City, Central Iraq. Iraqi Journal of Science, [S. l.], v. 59, n. 3A, p. 1277–1284, 2018. Disponível em: https://ijs.uobaghdad.edu.iq/index.php/eijs/article/view/442.. Acesso em: 22 nov. 2024.