TY  - BOOK
ED  - American Petroleum Institute, API
TI  - Controlling weld hardness of carbon steel refinery equipment to prevent environmental cracking: API Recommended Practice 942
U1  - Caja archivo 3 
PY  - 1982///
CY  - Washington
PB  - American Petroleum Institute, API
KW  - Normalización
KW  - Normas API
ER  -