TY  - BOOK
ED  - U.S. Department of Energy.
ED  - Natural gas conference (March 24-27, 1997)
TI  - Proceedings
PY  - 1998///
CY  - Pittsburgh, US : 
PB  - U.S. Department of Energy, 
KW  - GAS
KW  - EXPLOTACION
KW  - RESERVORIOS
ER  -