Gunatilaka, A.A.L.Siriwardene, H.M.U.Sotheeswaran, S.Balasubramaniam, S.2010-07-062010-07-061976Journal of the National Science Council of Sri Lanka, 4(2):p.163-166https://dl.nsf.gov.lk/handle/1/5843WeedsPharmacologyChemistryBotanyAlkaloids of the Catharanthus species of Sri Lanka:some preliminary studiesArticle