TY  - BOOK
ED  - American Petroleum Institute, API
TI  - Equipment marking color-symbol system chart: API Recommended practice 1637A
U1  - Caja 23-B 
PY  - 1995///
CY  - Washington
PB  - American Petroleum Institute, API
KW  - Simbología
KW  - Normalización
KW  - Normas API
ER  -