TY  - BOOK
AU  - Porter,Michael E.
TI  - Competitive strategy: techniques for analyzing industries and competitors : with a new introduction 
SN  - 0684841487
U1  - 658 21
PY  - 1998///].
CY  - New York: 
PB  - Free Press, 
KW  - Competition
KW  - Industrial management
N1  - Includes bibliographical references and index
ER  -