WASET
    Modreck Gomo,  Assessment of Groundwater Chemistry and Quality Characteristics in an Alluvial Aquifer and a Single Plane Fractured-Rock Aquifer in Bloemfontein, South Africa.   journal   = {International Journal of Environmental and Ecological Engineering}, [online]. World Academy of Science, Engineering and Technology.
    November 2017, vol. 131(11). 1019 - 1024
    [viewed 25 April 2024]. Available from: https://publications.waset.org/pdf/10008319.