| 000 | 00506nab a2200145 4500 | ||
|---|---|---|---|
| 005 | 20260520004133.0 | ||
| 008 | 260224s xxu | ||
| 245 | 0 | 0 |
_aRig efficiency improves in the US land market _bHowever, there are indications some technical advances may have run their curse. |
| 270 | _a12/09/06 ; 07/09/2005 | ||
| 300 | _a3 p. | ||
| 773 | 0 |
_tWorld Oil _gVol. 226, no. 8 (agos. 2005) ; p. 39-41 |
|
| 942 | _cARTICULO | ||
| 100 | 1 |
_aMason, Richard _933503 |
|
| 999 |
_c178036 _d178036 |
||