00626nam a2200205 4500 sa 68013005 DLC 20260227112618.0 691105s1968 ii a b 00000 eng sa 68013005 PL480:I-E-10245 TC930 .I64 627/.52 International Commission on Irrigation and Drainage. Controlling seepage losses from irrigation canals; world-wide survey, 1967. New Delhi [1968] vii, 100 p. illus. 26 cm. Bibliography: p. 82-88. Irrigation canals and flumes Linings. 84878 84878