Nanayakkara, D. K. N.2024-12-052024-12-052009-12-03Pceeding and Abstract of the Annual Research Seesions, December 3rd , 2009 University Of Peradeniya, Sri Lanka pp 150978-955-589-131-81391-4111https://ir.lib.pdn.ac.lk/handle/20.500.14444/4652en-USArticle