TY  - BOOK
ED  - American Petroleum Institute, API
TI  - Excavation monitoring and observation for damage prevention: API Recommended Practice 1166
U1  - Caja 22-B 
PY  - 2015///
CY  - Washington
PB  - American Petroleum Institute, API
KW  - Normalización
KW  - Normas API
ER  -