TY  - BOOK
ED  - American Petroleum Institute, API
TI  - Check valves: flanged, lug, wafer and butt-welding: API Standard 594
U1  - Caja 17 
PY  - 2017///
CY  - Washington
PB  - American Petroleum Institute, API
KW  - Normas API
KW  - Normalización
ER  -