Citation:Amaradivakara, W.A.A.V.S. and Deeyamulla, M.P., 2009. Use of moss (Barbula spp.) as a bioindicator to moitor atmospheric deposition of polycyclic aromatic hydrocarbons (PAHs): a preliminary study. Proceedings of the 65th Annual Sessions of Sri Lanka Association for the Advancement of Science, pp 221.