Wijesuriya, W.Dissanayake, D.M.A.P.Wijeratne, M.Edirisinghe, J.Herath, K.Abeywardene, V.2013-05-082013-05-082003Journal of the Rubber Research Institute of Sri Lanka86pp.32-37https://dl-rri.nsf.gov.lk/handle/1/1475AgricultureRubberSmallholdersAgricultural extensionNon-parametric methodsPreference rankingPreference ranking as a participatory tool in identifying farmers' perceptions in planning effective dissemination programmesA