Kumari, K.L.N.W.; Abeysinghe, D.C.; Dharmadasa, R.M.(Faculty of Agriculture and Plantation Management,Wayamba University of Sri Lanka, Makandura, 2016)
Perera, M.V.H.L.; Abeysinghe, D.C.; Dharmadasa, R.M.(Faculty of Agriculture and Plantation Management,Wayamba University of Sri Lanka, Makandura, 2016)