TY  - BOOK
AU  - Porter,Michael E.
TI  - Competitive strategy: techniques for analyzing industries and competitors 
SN  - 9780029253601 
U1  - HD/41 
PY  - 1980///
CY  - New York : 
PB  - The Free Press., 
KW  - Competition.
KW  - Industrial management.
N1  - Includes bibliographical references and indexes.
ER  -