00641nam0-22002411i-450-990002741890403321000274189FED01000274189(Aleph)000274189FED0100027418920000920d1968----km-y0itay50------baENGManagement science.de Williams Morris.Englewood CliffsPrentice Hall1968Morris,Williams368613ITUNINARICAUNIMARCBK99000274189040332129-9-18s.i.ECAECAManagement science425817UNINAING01