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2. Allanson, B. R. Read, G. H. L. 1987, The response of estuaries along the south eastern coast of South Africa to marked variation in freshwater inflow, Rhodes University, 1, 42
3. Further comment on the response of Eastern Cape province estuaries to variable freshwater inflows;Allanson;South African Journal of Aquatic Sciences,1995
4. Determination of alkalinity and total carbonate;Almgren,1983
5. Short term feeding rates for Acartia grani in natural conditions: diel variation;Bautista;Journal of Plankton Research,1988