TY  - BOOK
ED  - American Petroleum Institute, API
TI  - Hydraulic fracturing operations - well construction and integrity guidelines: API guidance document HF1
U1  - Caja 12 
PY  - 2009///
CY  - Washington
PB  - American Petroleum Institute, API
KW  - Normas API
KW  - Normalización
ER  -