TY  - BOOK
AU  - Porter, Michael E.
TI  - Competitive advantage: Creating and sustaining superior performance 
U1  - 658 
PY  - 1985///
CY  - New York
PB  - The Free Press
KW  - Competition
KW  - Industrial management
KW  - Strategic planning
KW  - Cost effectiveness
KW  - Performance
ER  -