Chandrasiri, K.K.M.D.Rupasena, L.P.Hector Kobbekaduwa Agrarian Reserarch and Training Institute2014-07-182014-07-182007https://dl-harti.nsf.gov.lk//handle/1/2314xiii, 86p.Perennial CropsDevelopment ProjectsImpact assessment of second prennial crop development project in Sri Lanka