Galketiya, K. B.Welegedara, H. T.2024-12-052024-12-052009-12-03Peradeniya University Research Session PURSE- 2009, Book of Abstract , University of Peradeniya , Sri Lanka , Vol.14. 3rd july. 2009 pp 132978-955-589-131-81391-4111https://ir.lib.pdn.ac.lk/handle/20.500.14444/4581en-USArticle