Aloysius, N.M.; Abeynayake, N.R.; Wijeyewardena, H.M.S.L.(Faculty of Agriculture and Plantation Management,Wayamba University of Sri Lanka, Makandura, 2016)
Kuluppuarachchi, M.K.; Athauda, A.M.T.P.; Wijeyewardena, H.M.S.L.(Faculty of Agriculture and Plantation Management,Wayamba University of Sri Lanka, Makandura, 2016)