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2. Heavy metal content in organs of the African Sharptooth Catfish, Clarias gariepinus (Burchell), from a transvaal lake affected by mine and industrial effluents. Part 1. Zinc and copper;Bezuidenhout L. M.;Water S A (Pretoria),1990
3. 1998 American Public Health Association American Water Works Association and Water Pollution Control Federation Washington D.C. L. S. Clesceri A. E. Greenberg A. D. Eaton Standard methods for the examination of water and wastewater 20th edition
4. A new bacterial disease of freshwater fishes;Davis H. S.;U.S. Bureau of Fisheries, Bulletin,1923
5. 2011 FFWCC (Florida Fish and Wildlife Conservation Commission) Florida fishing regulations