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F. J. Ebling, J. A. Kitching, R. D. Purchon, R. Bassindale, The Ecology of the Lough Ine Rapids with Special Reference to Water Currents, Journal of Animal Ecology, Vol. 17, No. 2 (Nov., 1948), pp. 223-244
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Ebling et al. (1948) studied this question.
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