TY  - BOOK
ED  - American Petroleum Institute, API
TI  - Recommended practices for blowout prevention equipment systems for drilling wells. 53. 3rd ed: API recommended practice 53
U1  - Bibliorato 
PY  - 1997///
CY  - Washington
PB  - American Petroleum Institute, API
KW  - Normas API
KW  - Normalización
ER  -