Porter, Michael E., 1947- Competitive advantage : creating and sustaining superior performance / Michael E. Porter. - New York : London : Free Press ; Collier Macmillan, c1985. - xviii, 557 p. : ill. ; 25 cm. Includes index. Bibliography: p. 537-540. ISBN: 0029250900 Subjects--Topical Terms: Competition.Industrial management. Index Terms--Curriculum Objective: Master in Management LC Class. No.: HD41 / .P668 1985 Dewey Class. No.: 658