00789nam0-22002891i-450-99000622694040332119980601000622694FED01000622694(Aleph)000622694FED0100062269419980601d1957----km-y0itay50------ba--------00-yyEconomic modelsan expositionE.F. Beach.London , New YorkChapman & Hall , John Wiley1957XI,, 227 p.24 cm330.1Beach,Earl Francis121630ITUNINARICAUNIMARCBK990006226940403321XV H 61053481FGBCXV H 62453992FGBCFGBCEconomic models637728UNINAGIU01