Lessons in rotary drilling. unit I lesson 2. the bit
Lessons in rotary drilling. unit I lesson 2. the bit
Texas : Petroleum Extension Service,. 1969.
English
Text
vi, 50 hlm., ilus., 28 cm.
Perpustakaan PEM Akamigas DIGITAL LIBRARY PEM AKAMIGAS (Call Number: 622.24 Pet l-I-2)