TY  - BOOK
AU  - Porter,Michael E.
TI  - Competitive advantage: creating and sustaining superior performance 
SN  - 9780743260879 (PB)
AV  - HD41 .P668 1985
U1  - 658 22
PY  - 1985///
CY  - New York
PB  - Free Press
KW  - Competition
KW  - Industrial management
N1  - Includes index; Bibliography: p. 537-540
ER  -