TY  - BOOK
ED  - American Petroleum Institute, API
TI  - Guidelines for design and manufacture of surface wellhead running, retrieving and testing tools, cean-out tools and wear bushings: API Technical Report 6RT
U1  - Caja 3-2 
PY  - 2020///
CY  - Washington
PB  - American Petroleum Institute, API
KW  - Normalización
KW  - Normas API
KW  - Válvulas
ER  -