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Environmental Earth Sciences > 2014 > 72 > 1 > 201-206
South African Journal of Botany > 2006 > 72 > 3 > 391-397
Journal of Hydrology > 2003 > 272 > 1-4 > 107-119
Environmental Earth Sciences > 2014 > 72 > 1 > 201-206
South African Journal of Botany > 2006 > 72 > 3 > 391-397
Journal of Hydrology > 2003 > 272 > 1-4 > 107-119