VELLEMU, E. C.; OMOREGIE, E. Lead pollution: A growing concern along the Namibian coastal waters. International Science and Technology Journal of Namibia, [S. l.], p. 021–034, 2014. Disponível em: https://journals.unam.edu.na/index.php/ISTJN/article/view/1125. Acesso em: 4 may. 2024.