Pallawala, P.A.P.M.; Wijesinghe, S.A.E.C.; Yakandawala, K.(Faculty of Agriculture and Plantation Management,Wayamba University of Sri Lanka, Makandura, 2013)
Wijeratne, K.D.B.M.; Adikaram, N.K.B.; Yakandawala, D.M.D.; Yakandawala, K.(Faculty of Agriculture and Plantation Management,Wayamba University of Sri Lanka, Makandura, 2016)
Wickramasinghe, W.M.T.K.; Chathurani, G.D.G.; Yakandawala, K.(Faculty of Agriculture and Plantation Management,Wayamba University of Sri Lanka, Makandura, 2016)