| 000 | 00723nam a2200241 4500 | ||
|---|---|---|---|
| 005 | 20260608203231.0 | ||
| 008 | 260224s2003 dcu | ||
| 082 | _aCaja 4 | ||
| 210 | _aSpec 7NVR | ||
| 245 | 0 | 0 |
_aSpecification for drill string non-return valves _bAPI Specification 7NRV |
| 246 | 1 | _aAPI 7NRV | |
| 250 | _a1st ed. | ||
| 260 |
_aWashington _bAmerican Petroleum Institute, API _c2003 |
||
| 270 | _a09/05/2013 ; 13/08/2007 | ||
| 300 | _a20 p. | ||
| 773 | _g | ||
| 942 | _cNORMA | ||
| 110 | 2 |
_aAmerican Petroleum Institute, API _9105 |
|
| 650 | 0 |
_aNormalización _9106 |
|
| 650 | 0 |
_aNormas API _9109 |
|
| 650 | 0 |
_aEquipos de perforación _9115 |
|
| 999 |
_c166825 _d166825 |
||