TY - BOOK AU - Wijesuriya Wasana AU - Abeywardene Vidura AU - Dissanayake D M A P AU - Edirisinghe Jagath AU - Herath Keminda TI - Some issues related to sustainability in the smallholder rubber sector: A case study of three major rubber growing districts PY - 2007/// PB - Journal of the Rubber Research Institute of Sri Lanka KW - Participatory rural appraisal KW - Smallholder ER -