TY  - BOOK
ED  - American Petroleum Institute, API
TI  - Recommended practice for railroad transportation of line pipe: API Recommended Practice 5L1
U1  - Caja 2-A 
PY  - 2009///
CY  - Washington
PB  - American Petroleum Institute, API
KW  - Normas API
KW  - Normalización
ER  -