00454nam a2200157Ia 4500008004100000020001500041082002200056100002300078245006500101260004700166300000800213650001400221650002000235653002300255700001800278170901s1996    xx            000 0 und d  a0521473586  a338.9009172bD46P  aDinwiddy, Caroline 0aPrinciples of Cost-Benefit Analysis for Developing Countries  aNew YorkbCambridge University Pressc1996  a282  aEconomics  aSocial sciences  aCost effectiveness  aTeal, Francis