Rangana, S.H.C.S.; Basnayake, B.M.V.S.; Perera, W.G.S.; Dassanayake, E.M.(Faculty of Agriculture and Plantation Management, Wayamba University of Sri Lanka, Makandura, 2005)
Jayaweera, S.L.D.; Basnayake, B.M.V.S.; Dassanayake, E.M.(Faculty of Agriculture and Plantation Management, Wayamba University of Sri Lanka, Makandura, 2005)
Gimhani, D.R.; Basnayake, B.M.V.S.; Dassanayake, E.M.(Faculty of Agriculture and Plantation Management, Wayamba University of Sri Lanka, Makandura, 2005)