Nuska, M.N.F.; De Siva, S.N.T.; Ranasinghe, R.M.S.B.K.; Deshapriya, R.M.C.(Faculty of Agriculture and Plantation Management,Wayamba University of Sri Lanka, Makandura, 2016)
Ranasinghe, R.M.S.B.K.; Deshapriya, R.M.C.; Abegunawardana, D.I.; Kumara, U.M.A.P.; Samarakoon, S.M.C.L.; Rahularaj, R.; Umayanga, H.A.D.I.(Senate Research and Higher Degrees Committee, Wayamba University of Sri Lanka, 2017)