00571nam a2200109Ia 4500008004100000100001800041245012500059260013300184440005000317650007100367700002300438241114s9999||||xx |||||||||||||| ||und||  aRABY, Namika  0aProfessional management in irrigation systems:A case study of performance control in Mahaweli system H, Sri Lanka         aSri Lanka                                                   bIIMI                                                        c1989  aInternational Irrigation Management Institute  aIRRIGATION | IRRIGATION   SYSTEMS | MAHAWELI SYSTEM | SRILANKA      a MERREY, Douglas J