Wijenayake, W.M.H.K.Dias, R.K.S.Chaminda, K.M.G.R.2015-07-302015-07-302001Wijenayake, W.M.H.K., Dias, R.K.S. and Chaminda, K.M.G.R. 2001. Population dynamics of the nymphs of Centroptella ceylonensis Muller-Liebenau and C. Soldani Muller-Liebenau (Ephemeroptera, Baeridae) in the Aswathu oya, Puwakpitiya. Proceedings of the 10th Annual Scientific sessions of the Sri Lanka Association for Fisheries and Aquatic Resources, Sri Lanka Association for Fisheries and Aquatic Resources, Colombo, Sri Lanka. (Abstract) p.16.http://repository.kln.ac.lk/handle/123456789/9047enArticle