na INLIS000000000003368 Ind 0010-1118003368 A review of alternative strategies for improving farmer managed irrigation system in Sri Lanka DAYARATNE, M.H.S. M.H.S. Dayaratne Colombo IIMI 1991 x, 91 p.: ill.; 21 cm + App.-- x, 91 p.: ill.; 21 cm + App.-- 92-9090-136-5 Bibliografi p. 91 631.67(548.7) IRRIGATION SYSTEMS FARM MANAGEMENT SRI LANKA 972/MS/93