Bulletin of the Rubber Research Institute of Sri Lanka

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The economics of replanting in rubber plantations part I. cost of immature upkeep
(Rubber Research Institute of Sri Lanka. Agalawatta, 1997) Samarappuli, I.N.; Wickramaratne, C.S.
The economics of replanting in rubber plantations part II. cost of mature upkeep
(Rubber Research Institute of Sri Lanka. Agalawatta, 1997) Samarappuli, I.N.; Wickramaratne, C.S.
Analysis of clonal composition in rubber plantations
(Rubber Research Institute. Agalawatta, 1999) Tillekeratne, L.M.K.; Samarappuli, I.N.; Liyanage, K.K.
The economics of replanting in rubber plantation Pt. II. financial and sensitivity analysis
(Rubber Research Institute. Agalawatta, 1998) Samarappuli, I.N.; Wickramarathne, C.S.