✦ LIBER ✦
Longer useful lives for roller bits cuts sharply into drilling costs : S Afr Min Engng J, V90, N4148, March 1979, P39–43
- Publisher
- Elsevier Science
- Year
- 1979
- Tongue
- English
- Weight
- 97 KB
- Volume
- 16
- Category
- Article
- ISSN
- 0148-9062
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