Razaak, MohamadPerera, JayanthaHector Kobbekaduwa Agrarian Research and Training Institute2014-07-182014-07-181995955-612-010-6https://dl-harti.nsf.gov.lk//handle/1/2346ix, 99p.IrrigationUtilizationFarmer's AssociationWater managementWater - user organizations in irrigation water management in the Gal Oya left bank irrigation system:a case study of farmer beneficiaries' evaluation