00786nam0-22002771i-450-9900039455504033210-87991-863-2000394555FED01000394555(Aleph)000394555FED0100039455520030311d1978----km-y0itay50------bausaUSNew methods of measuring marginal utilityPorcupinePhiladelphia142 p.con grafici22 cmFrisch,Ragnar<1895-1973>102963ITUNINARICAUNIMARCBK990003945550403321D1.11285DECTSDECTSNew methods of measuring marginal utility511004UNINA