TY  - BOOK
ED  - American Petroleum Institute, API
TI  - Pressure-relieving and depressuring systems: API Standard 521
U1  - Caja 14 
PY  - 2014///
CY  - Washington
PB  - American Petroleum Institute, API
KW  - Normalización
KW  - Normas API
N1  - Incluye ANSI/3-A 00-00-2014 Sanitary standards for general requirements
ER  -