Sadharekha, W.M.G.W.; Balasooriya, B.L.W.K.; Amarawansa, R.P.U.I.; Dandeniya, W.S.; Dharmakeerthi, R.S.(Faculty of Agriculture and Plantation Management, Wayamba University of Sri Lanka:Makandura, 2018)
Munasinghe, M.A.B.J.; Balasooriya, B.L.W.K.; Piyathilaka, M.A.P.C.; Amarawansa, R.P.U.I.; Dandeniya, W.S.; Dharmakeerthi, R.S.(Faculty of Agriculture and Plantation Management, Wayamba University of Sri Lanka:Makandura, 2018)
Sunil, A.J.Y.A.D.; Balasooriya, B.L.W.K.; Amarawansa, R.P.U.L.; Dandeniya, W.S.; Dharmakeerthi, R.S.(Faculty of Agriculture and Plantation Management, Wayamba University of Sri Lanka:Makandura, 2018)