00759nam0-22002891i-450-99000306020040332120090708113429.0000306020FED01000306020(Aleph)000306020FED0100030602020030910d1957----km-y0itay50------baengITEconomic modelsan expositionE.F. Beach.New YorkJohn Wiley & Sons\[\\1957].p. illus.24 cmBeach,Earl FrancisITUNINARICAUNIMARCBK990003060200403321B4.76948DECTSB/3.2 BEA011940SESDECTSSESEconomic models465200UNINA