00791nam0-22002651i-450-990002615350403321000261535FED01000261535(Aleph)000261535FED0100026153520000920d1985----km-y0itay50------baENGCompetitive advantage. Creating and Sustaining superior performacedi PORTER Micha elNew YorkThe Press Free1985557 pp.24 cmPorter,Michael E.<1947- >5334ITUNINARICAUNIMARCBK9900026153504033210-0-219-TI6118ECAECACompetitive advantage. Creating and Sustaining superior performace433359UNINAING01