TY - BOOK AU - Porter,Michael E. TI - Competitive strategy: techniques for analyzing industries and competitors : with a new introduction SN - 0684841487 U1 - 338.604 POR PY - 1998/// CY - New York, London PB - Free Press KW - Competition KW - Industrial management N1 - Originally published: New York : Free Press, c1980; Includes bibliographical references and index ER -