Dewagedara, D.M.A.E.I.; Wijesinghe, S.A.E.C.; Rathnayake, R.H.M.K.(Faculty of Agriculture and Plantation Management,Wayamba University of Sri Lanka, Makandura, 2016)
Senevirathne, L.P.S.S.G.; Jayasinghe-Mudalige, U.K.; Guruge, T.P.S.R.(Faculty of Agriculture and Plantation Management,Wayamba University of Sri Lanka, Makandura, 2016)
Siriwardhana, I.D.; Athauda, A.M.T.P.; Herath Banda, R.M.(Faculty of Agriculture and Plantation Management, Wayamba University of Sri Lanka, Makandura, 2005)
Surige, I.A.; Guruge, T.P.S.R.; Jayasinghe-Mudalige, U.K.(Faculty of Agriculture and Plantation Management,Wayamba University of Sri Lanka, Makandura, 2016)
Neranjika, V.P.M.; Abeynayake, N.R.; Fernando, M.T.N.(Faculty of Agriculture and Plantation Management, Wayamba University of Sri Lanka, Makandura, 2005)