颁布单位：[University of the Free State] |  颁布时间：2009 |  实施时间：2009 |  学科分类：[["Dissertation, (M.Sc., (Institute, for, Groundwater, Studies))--University, of, the, Free, State,, 2009","Groundwater, --, Quality, --, South, Africa","Coal, mines, and, mining, --, Environmental, aspects, --, South, Africa","Coalfields, --, South, Africa"]]

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