TY  - BOOK
AU  - Porter,Michael E.
TI  - Competitive Strategy: Techniques for Analyzing Industries and Competitors
SN  - 0684841487
U1  - C 658.21 P847 1998 
PY  - 1998///
CY  - New York
PB  - The Free Press
N1  - Includes Appendix,Bibliography and Index
ER  -