Warnakulasooriya, H.U.Athukorale, W.2021-09-012021-09-012015Annals of the Sri Lanka Department of Agriculture, 17:p.64-67https://dl-doa.nsf.gov.lk/handle/1/3334PaddyRiceIrrigationRice growing districtsTechnical and allocative efficiencies of rice farming under major irrigation in main rice growing districts of Sri LankaArticle