00346nam a2200109Ia 4500082002300000100004700023245009300070260005000163300001300213500000500226700000500231  a338.16317bIn39.RS  aIndia. Irrigation and Power, Ministry of-.  aReport of the study group of efficiency and economy in the irrigation and power sectorb  aDelhibCentral Water & Power Commissionc1957  ax, 204p.  a  a