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Item Evaluation of Ashley and patterson model diagnostic tool in selection of ARCH/GARCH family models:case of natural rubber prices at the Colombo auction(Postgraduate Institute of Agriculture, University of Peradeniya:Peradeniya, 2013) Herath, K.; Samita, S.; Wijesuriya, W.Item The status of smallholder rubber lands in the Moneragala district(Rubber Research Institute. Agalawatta, 2005) Wijesuriya, W.; Dissanayake, D.M.A.P.; Herath, K.; Edirisinghe, I.C.Item Profit efficiency of smallholder rubber farmers in Kegalle, Kalutara and Ratnapura districts(Rubber Research Institute. Agalawatta, 2010) Edirisinghe, J.; Wijesuriya, W.; Bogahawatte, C.Item Rubber to rescue adverse environmental impacts(Rubber Research Institute of Sri Lanka. Agalawatta, 2009) Samarappuli, L.; Wijesuriya, W.Item Use of grass root level information for effective policy making and extension planning. experiences from the smallholder rubber sector(Rubber Research Institute of Sri Lanka. Agalawatta, 2009) Wijesuriya, W.; Dissanayake, A.