✦ LIBER ✦
Optimum bit geometry for rotary drilling of boreholes in hard rocks : Sov Min Sci, V12, N6, Nov–Dec 1977, P612–614
✍ Scribed by I.I. Kulishenko; V.I. Kovalev; V.F. Vasilchenko
- Publisher
- Elsevier Science
- Year
- 1978
- Tongue
- English
- Weight
- 98 KB
- Volume
- 15
- Category
- Article
- ISSN
- 0148-9062
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