✦ LIBER ✦
Fully mechanised winning with solid stowing in thick seams at nordstern colliery (In German and English) : Voss, K H; Sielaff, H D Gluckauf, V113, N19, 6 Oct 1977, P933–937 (German), P2–5 (English)
- Publisher
- Elsevier Science
- Year
- 1979
- Tongue
- English
- Weight
- 102 KB
- Volume
- 16
- Category
- Article
- ISSN
- 0148-9062
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