Kulasooriya, S.A.Jayawardana, B.P.A.Padmasiri, J.P.Fonseka, W.S.C.A.2016-04-262016-04-261993Proceedings of the 49th Annual Sessions of the Sri Lanka Association for the Advancement of Science:p.150-151https://dl.nsf.gov.lk/handle/1/23214Biological SciencesSome biological problems associated with water purification at the Tissawewa tank at AanuradhapuraArticleRG/92/B/006FR 0555