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Joshua N. Edokpayi and  John O. Odiyo and  Patience P. Shikwambana,  Seasonal Variation of the Impact of Mining Activities on Ga-Selati River in Limpopo Province,  South Africa.   journal   = {International Journal of Environmental, Chemical, Ecological, Geological and Geophysical Engineering}, [online]. World Academy of Science, Engineering and Technology. February 2016, vol. 110(2). 156 - 161[viewed 21 July 2018]. Available from: http://waset.org/publications/10003654.