Barker, R.Samed, M.Weligamage, P.Kikuchi, M.2014-12-122014-12-122001Economic Review, 27(8-9):p.27-30https://dl.nsf.gov.lk/handle/1/15212EconomicsAgricultural economicsDomestic resource costShadow exchange rateResource cost ratioComparative advantage in rice productionArticle