00447cam a22001217a 4500008004000000082001200040100002100052245008700073260004300160300001000203440003900213650007300252180718b1996   xxu||||| |||| 00| 0 eng d  aV43 Y84  aYoung, Robert A.  aMeasuring economic benefits for water investments and policiescby Robert A. Young  aWashington, D.C.bThe World Bankc1996  a188p.  aWorld Bank technical paper; no.338  aWater resources development - Economic aspects - Mathematical models