Waduge, T.D.Edirisnghe, J.C.Fernando, A.P.S.Herath, H.M.L.K.Jayasinghe-Mudalige, U.K.2019-01-042019-01-042013Tropical Agricultural Research and Extension,16(3):p.88-92https://dl.nsf.gov.lk/handle/1/24080WeatherJust and Pope Production FunctionRiskFeasible Generalized Least Squares