REFERENCES
- Allanson , B. R. and Jackson , P. B.N. , eds. 1984 . The limnology and fisheries potential of Lake Le Roux., South African National Scientific Programmes Report No. 77 Pretoria
- Kirk , J. T.O. 1983 . Light and photosynthesis in aquatic ecosystems. London. : Cambridge Univ. Press .
- Nie , N. H. , Hall , C. H. , Jenkins , J. G. , Steinbrenner , K. and Bent , D. H. 1975 . Statistical package for the social sciences, , 2nd Edn New York : McGraw-Hill .
- Straskraba , M. 1980 . “ The effects of physical variables on freshwater production: analyses based on models. ” . In The functioning of fresh water ecosystems Edited by: Le Cren , E. D. and Lowe-McConnell , R. H. 13 – 84 . London : Cambridge Univ. Press .
- Schulze , B. R. 1965 . Climate of South Africa, Part 8. General Survey. Pretoria : Weather Bureau, Department of Transport .
- Talling , J. F. 1969 . The incidence of vertical mixing and some biological and chemical consequences in tropical African lakes. . Verb., int. Ver. Limnol. , 17 : 998 – 1012 .
- Walmsley , R. D. and Bruwer , C. A. 1980 . Water transparency characteristics of South African impoundments. . J. Limnol. Soc. sth. Afr. , 6 : 69 – 76 .
- Walmsley , R. D. and Butty , M. 1980 . Limnology of some selected South African impoundments. Pretoria. : Water Research Commission .
- Wetzel , R. G. 1975 . Limnology. Philadelphia. : W.B. Saunders .