Rapiel, T.N.; Tennakoon, N.A.; Nugawela, A.; Fernandopulle, M.N.D(Faculty of Agriculture and Plantation Management,Wayamba University of Sri Lanka, Makandura, 2013)
Silva, S.P.P.; Nayanakantha, N.M.C.; Seneviratne, P.; Nugawela, A.(Faculty of Agriculture and Plantation Management,Wayamba University of Sri Lanka, Makandura, 2016)
Kulasinghe, K.P.N.; Wijebandara, D.M.D.I.; Nugawela, A.; Fernandopulle, M.N.D.(Faculty of Agriculture and Plantation Management,Wayamba University of Sri Lanka, Makandura, 2013)
Hettiarachchi, L.G.; Wijesuriya, W.; Nugawela, A.; Sankalpa, J.K.S.; Karunaratne, S.B.(Faculty of Agriculture and Plantation Management,Wayamba University of Sri Lanka, Makandura, 2013)
Mirando, J.S.; Fernando, T.H.P.S.; Nugawela, A.; Wijayaratne, C.(Faculty of Agriculture and Plantation Management,Wayamba University of Sri Lanka, Makandura, 2013)