00729nam0-22002771i-450-990003905340403321333-19127-4000390534FED01000390534(Aleph)000390534FED0100039053420020417d1976----km-y0itay50------baGBRGBEconomic Model BuildingF.Neal, R.ShoneLondraThe MacMillan Press1976172 p.21 cmNeal,F.382670Shone,Ronald108490ITUNINARICAUNIMARCBK990003905340403321B4.67007DECTSDECTSEconomic Model Building516613UNINA