00000nam 2200000 4500 INLIS000000000006004 20220716121204.0 220716||||||||| | ||| |||| ||eng|| 0010-072200000006004 eng 658 658 POR C Porter, Michael E. Competitive advantage: creating and sustaining superior performance New York: Free Press, 1985 xviii, 557 hlm 24 cm Competitive Advantage Value Chain, Competitive Strategy, Industrial Management,