00286nam a2200109Ia 450000500170000008000190001724500550003626000290009130000170012058300180013765000210015520260716043722.0  a02.03.02 P1871  aInvestment in health : social and economic returns  bPAHOaWashingtonUSc2001  aviii, 284 p.  c7/28/06kJOYD  aHEALTH ECONOMICS