TY  - BOOK
ED  - American Petroleum Institute, API
TI  - Recommended practice for use and procedures for inspection, maintenance, and repair of drilling and well servicing structures. 4G. 3rd. ed: API Recommended Practice 4G
U1  - Bibliorato 
PY  - 2004///
CY  - Washington
PB  - American Petroleum Institute, API
KW  - NormalizaciÃ³n
KW  - Normas API
KW  - Torres de perforaciÃ³n
KW  - PerforaciÃ³n de pozos
KW  - Equipos de perforaciÃ³n
ER  -