Maintenance before management : a new strategy for small scale irrigation tanks in Sri Lanka. - London : International Irrigation Management Institute , 1988 - 11p. 20 cm. - ODI/IIMI/Irrigation management network paper 88/2e . ISBN: 0951189X Subjects--Topical Terms: Irrigation--Sri Lanka Gov. Doc. Class. No.: GB ODI IIMI IMN-88 2e