Juliana A. Galhardi and Daniel M. Bonotto, Geochemistry of Natural Radionuclides Associated with Acid Mine Drainage (AMD) in a Coal Mining Area in Southern Brazil. journal = {International Journal of Geological and Environmental Engineering}, [online]. World Academy of Science, Engineering and Technology. May 2015, vol. 101(5). 521 - 528 [viewed 21 September 2024]. Available from: https://publications.waset.org/pdf/10001339.