Positive displacement downhole and motor for rotary drilling rigs installation and maintenance [slaid]
18
| Format: | |
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| Published: |
Austin, Tex. : Petroleum Extension Service, The University of Texas at Austin,
1977
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| Subjects: |
18
| Format: | |
|---|---|
| Published: |
Austin, Tex. : Petroleum Extension Service, The University of Texas at Austin,
1977
|
| Subjects: |