Aheeyar, M.M.Henegedera, G.M.Rupasena, L.P.Hector Kobbekaduwa Agrarian Research and Training Institute2014-07-182014-07-182005955-612-067-xhttps://dl-harti.nsf.gov.lk//handle/1/2309x, 51p.Production CostsRiceThe cost of production of rice in Kegalle and Kurunegala districts of Sri Lanka