Ariyawansa, G.I.I.; Gamlath, Sandeeptha; Jayasekera, S.J.B.A.(Faculty of Agriculture and Plantation Management, Wayamba University of Sri Lanka, Makandura, 2005)
Karaunarathne, P.G.N.; Siriwardhane, K.P.D.; Jayasekera, S.J.B.A.(Faculty of Agriculture and Plantation Management, Wayamba University of Sri Lanka, Makandura, 2005)
Karaunachandra, K.R.K.; Siriwardhana, K.P.D.; Jayasekera, S.J.B.A.(Faculty of Agriculture and Plantation Management, Wayamba University of Sri Lanka, Makandura, 2005)