00718nam0-22002651i-450-99000373006040332120071219101250.0000373006FED01000373006(Aleph)000373006FED0100037300620030910d1954----km-y0itay50------baitay-------001yyEconomic progress and economic changeS. FabricantU.S.A.NBER195497 p.22cmFabricant,S.381545ITUNINARICAUNIMARCBK990003730060403321O1-O2.94316DECTSDECTSEconomic progress and economic change501357UNINA