TY  - BOOK
ED  - American Petroleum Institute, API
TI  - Api recommended practices for laboratory testing of surface active agents for well stimulation: API recommended practice 42
U1  - Caja 11-A 
PY  - 1977///
CY  - Washington
PB  - American Petroleum Institute, API
KW  - Normalización
KW  - Normas API
ER  -