TY  - BOOK
ED  - American Petroleum Institute, API
TI  - Technical report on electric motor prime mover for beam pumping unit service: API Technical report 11L6
U1  - Caja 7-A 
PY  - 2008///
CY  - Washington
PB  - American Petroleum Institute, API
KW  - Motores eléctricos
KW  - Normalización
KW  - Normas API
KW  - Unidades de bombeo
ER  -