Jayasena, W.G.Herath, H.M.G.Agrarian Research and Training Institute2014-07-182014-07-181984https://dl-harti.nsf.gov.lk//handle/1/2238xvii, 151p.Socio-Economic SurveysRubberSri LankaSocio-economic conditions of rubber small holders in Sri Lanka : a preproject study of Ratnapura, Kalutara and Kegalle district