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_aSilverman, Seth _911685 |
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| 245 | 0 | 0 | _aDrilling smoothly saves time |
| 270 | _a12/09/06 ; 15/07/02 | ||
| 300 | _a2 p. | ||
| 773 | 0 |
_tHart's E & P _gVol. 73, Issue 6 (jun. 2000) ; p. 57-58 |
|
| 800 | 1 |
_aSilverman, Seth _911685 |
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_c135563 _d135563 |
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