(1977). Positive displacement downhole and motor for rotary drilling rigs installation and maintenance [slaid]. Austin, Tex. : Petroleum Extension Service, The University of Texas at Austin.
Citace podle Chicago (17th ed.)Positive Displacement Downhole and Motor for Rotary Drilling Rigs Installation and Maintenance [slaid]. Austin, Tex. : Petroleum Extension Service, The University of Texas at Austin, 1977.
Citace podle MLA (9th ed.)Positive Displacement Downhole and Motor for Rotary Drilling Rigs Installation and Maintenance [slaid]. Austin, Tex. : Petroleum Extension Service, The University of Texas at Austin, 1977.
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