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Anatomy of a South African Karst Hydrosystem; Cave and Karst Systems of the World ,
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Chemical Hydrogeology:
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Anatomy of a South African Karst Hydrosystem; Cave and Karst Systems of the World ,
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Physical Hydrogeology:
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Anatomy of a South African Karst Hydrosystem; Cave and Karst Systems of the World ,
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Chemical Hydrology:
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Biological Invasions in South Africa ,
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