TY  - BOOK
ED  - American Petroleum Institute, API
TI  - Specification for wellhead surface safety valves and underwater safety valves for offshore service: API Specification 14D
U1  - Caja archivo 2 
PY  - 1994///
CY  - Washington
PB  - American Petroleum Institute, API
KW  - Normas API
KW  - Normalización
ER  -