Diamond drilling bits [slaid]/

समान संसाधन

• The bit
  द्वारा: University of Texas. Petroleum Extension Service
  प्रकाशित: (1976)
• The bit /
  द्वारा: Leecraft, Jodie, और अन्य
  प्रकाशित: (1981)
• Roller-cone bits [slaid]
  प्रकाशित: (1977)
• Rotary, kelly and swivel
  द्वारा: University of Texas. Petroleum Extension Service
  प्रकाशित: (1966)
• An investigation into the percussive drill bit penetration of rock /
  द्वारा: 322463 Mustapha Kamal Shahrom