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 Biological and Ecological Engineering}, [online]. World Academy of Science, Engineering and Technology.
    January 2016, vol. 110(2). 156 - 161
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