00330nam a2200121Ia 4500020001500000082002300015100002100038245007600059260004000135300002300175500000500198700000500203  a817033814X  a338.16317bP437.ID  aPerera, Jayantha  aIrrigation development and agraian change; a study in Sindh, Pakistanb  aNew DelhibRawat Publicationsc2003  a311p. Bibl. Index.  a  a