Porter, Michael E., 1947- Competitive advantage : creating and sustaining superior performance : with a new introduction / Michael E. Porter. - xxiv, 557 pages : illustrations ; 23 cm. Originally published: New York : Free Press ; London : Collier Macmillan, ©1985. Includes bibliographical references (pages 537-540) and index. ISBN: 0684841460 9780684841465 Subjects--Topical Terms: Industrial management.Competition.Performance. Dewey Class. No.: 658 / POR