00297nam a22000977a 4500040000700000082002100007100005600028245003900084260006700123300000900190  cSY  a333 MAU 1973 087  aMaurice M. Kelso william E. Martin lawrence E. Mack  aWater supplies and Economic Growth  aUSAbMaurice M. Kelso william E. Martin lawrence E. Mackc1973  a327p