Ranasinghe, G.A.Salim, N.Chandrika, U.G.Abeysekera, A.M.2016-05-022016-05-022011International Symposium on Natural Products and their Applications in Health and Agriculture 2011:p.62https://dl-ifs.nsf.gov.lk/handle/1/1179Efficacy of two different methods of extraction of camptothecin from Ophiorrhiza mnungosConference paper