By Kotze PJ   Steyn GJ   du Preez HH   Kleynhans CJ   in African Journal of Aquatic Science

ISSN:1727-9364|29|2|129-143

Taylor & Francis Ltd‎(2004)‎

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By Nussey G   van Vuren JHJ   du Preez HH   in African Journal of Aquatic Science

ISSN:1727-9364|27|1|61-84

Taylor & Francis Ltd‎(2002)‎

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By Nussey G   van Vuren JHJ   du Preez HH   in African Journal of Aquatic Science

ISSN:1727-9364|27|1|47-60

Taylor & Francis Ltd‎(2002)‎

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By Sanders M.J.   Du Preez H.H.   Van Vuren J.H.J.   in Ecotoxicology and Environmental Safety

ISSN:0147-6513|41|2|203-214

Elsevier‎(1998)‎

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