By van Tonder G. J.   in Environmental Technology

ISSN:1479-487X|18|10|1019-1028

Taylor & Francis Ltd‎(1997)‎

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By Maree J.P.   Dingemans D.   van Tonder G.J.   Mtimkulu S.   in Water Science and Technology

ISSN:0273-1223|38|4|331-337

Elsevier‎(1998)‎

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