✦ LIBER ✦
Study of the deformation process in hole walls while introducing a drilling instrument into the near-stope portion of a coal seam
✍ Scribed by V. A. Nikiforov
- Publisher
- Springer
- Year
- 1984
- Tongue
- English
- Weight
- 323 KB
- Volume
- 20
- Category
- Article
- ISSN
- 1573-8736
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