Lessons in rotary drilling. unit V lesson 6. vessel inspection and maintenance.

Lessons in rotary drilling. unit V lesson 6. vessel inspection and maintenance.
Texas : Petroleum Extension Service, (PETEX). 1977.
English
Text
v, 37 hlm., ilus., 28 cm.
Perpustakaan PEM Akamigas DIGITAL LIBRARY PEM AKAMIGAS (Call Number: 622.24 Pet l-V-6.)