Dharmaratne, P.P.; Gajanayake, B.; Karunarathna, K.M.H.I.; Priyadarshane, L.B.M.D.L.(Faculty of Agriculture and Plantation Management,Wayamba University of Sri Lanka, Makandura, 2016)
Weerasekera, W.M.P.M.; Abeynayake, N.R.; Attanayake, A.M.C.M.(Faculty of Agriculture and Plantation Management,Wayamba University of Sri Lanka, Makandura, 2013)
Herath, H.M.D.T.K.; Atauda, A.M.T.P.; Edirisinghe, J.C.(Faculty of Agriculture and Plantation Management, Wayamba University of Sri Lanka, Makandura, 2005)
Jayasuriya, S.H.P.; Gajanayake, K.G.M.C.P.B.; Abeysinghe, D.C.(Faculty of Agriculture and Plantation Management, Wayamba University of Sri Lanka, Makandura, 2005)
Ekanayake, E.M.M.S.; Wijetilaka, L.C.; Ranaweera, B.(Faculty of Agriculture and Plantation Management, Wayamba University of Sri Lanka, Makandura, 2005)