TY  - BOOK
ED  - American Petroleum Institute, API
TI  - Standard form hardcopy presentation of downhole well log data: API recommended practice 31A
U1  - Caja 11 
PY  - 1997///
CY  - Washington
PB  - American Petroleum Institute, API
KW  - Normalización
KW  - Normas API
ER  -