00665nam0-22002531i-450 99000728733040332120181218125454.0000728733FED01000728733(Aleph)000728733FED0100072873320021010d1971----km-y0itay50------baengRisk, uncertainty and profitFrank H. KnightLondons.e.1971Knight,Frank Hyneman481960ITUNINARICAUNIMARCBK990007287330403321XV G 34DTEDTERisk, uncertainty and profit276522UNINAGEN01