✦ LIBER ✦
Location of interchamber pillars when working contiguous ore bodies by the room and pillar system : 2F, 1T, 3R. Soviet min. Sci. V9, N4, July–Aug. 1973, P368–372
✍ Scribed by V.L. Vodopyanov
- Publisher
- Elsevier Science
- Year
- 1974
- Tongue
- English
- Weight
- 140 KB
- Volume
- 11
- Category
- Article
- ISSN
- 0148-9062
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