TY  - BOOK
ED  - American Petroleum Institute, API
TI  - General purpose gear units for petroleum, chemical, and gas industry services: API standard 677
U1  - Caja 19-A 
PY  - 2006///
CY  - Washington
PB  - American Petroleum Institute, API
KW  - Normalización
KW  - Normas API
ER  -