Jayalath, J.M.J.C.Padmasiri, J.P.Fonseka, W.S.C.A.Kulasooriya, S.A.Jayawardana, B.P.A.2016-04-262016-04-261994Proceedings of the 50th Annual Sessions of the Sri Lanka Association for the Advancement of Science:p.158-159https://dl.nsf.gov.lk/handle/1/23215Biological SciencesA horizontal flow roughing filter as a solution to algal problems at the Tissawewa purification plantArticleRG/92/B/006FR 0555