TY  - BOOK
AU  - Helfat Constance E
TI  - Investment choice in industry
SN  - 026208175X
U1  - X9(F555)-65.73.N8, M8 
PY  - 1988///
CY  - Cambridge
PB  - MIT Press         
KW  - Petroleum Industry
N1  - Bibliography P 177-82; Appendix P 137-63
ER  -