Drill stem
Edited by J. Leecraft
- 2nd ed.
- Texas Petroleum Extension Service 1981
- v, 43 p. ill. 33 cm.
- Rotary drilling .
Unit - 1 , Lesson - 3
Drilling - Rotary
624.152 / DRI/1981
Unit - 1 , Lesson - 3
Drilling - Rotary
624.152 / DRI/1981