TY  - GEN
AU  - Porter, Michael E
TI  - Competitive Advantage: Creating and Sustaining Superior Performance 
SN  - 9780743260879
AV  - HD 41 POR 1998
PY  - 1998///
CY  - New York
PB  - Free Press
KW  - superior perfomance
KW  - creating and sustaining
N1  - includes index
ER  -