00800nam0-22002651i-450-99000364022040332120001010000364022FED01000364022(Aleph)000364022FED0100036402220000920d1960----km-y0itay50------baitay-------001yyDemographie and Economic change in devel oped countriesNational bureau of econo mic ResearchPreincetons.e.1960National Bureau of Economic Research103307ITUNINARICAUNIMARCBK990003640220403321SE 049.03.011-032522DECSEDECSEDemographie and Economic change in devel oped countries504370UNINAING01