Chambers, Robert.
Water Management and paddy producation in the dry zone of Sri Lanka - Colombo Agrarian research and training institute 1975 - x, 71 p. - Occasional publication series no.8 .
31631
631.71 / SRI
Water Management and paddy producation in the dry zone of Sri Lanka - Colombo Agrarian research and training institute 1975 - x, 71 p. - Occasional publication series no.8 .
31631
631.71 / SRI