NCUBE, L.; ZHAO, B.; NIEKERK, H. J. van. An Evaluation of the Effects of Historical Coal Mining Activities on Water Quality in the Elitheni Colliery, Eastern Cape Province, South Africa. Asian Journal of Applied Sciences, [S. l.], v. 5, n. 5, 2017. Disponível em: https://ajouronline.com/index.php/AJAS/article/view/4812. Acesso em: 18 apr. 2024.