✦ LIBER ✦
Rock pressure during mining of coal seams with roofs which are difficult to cave (In Russian) : Gapanovich, L N; Drizhd, I N Ugol n3, March 1983, P19–24
- Publisher
- Elsevier Science
- Year
- 1984
- Tongue
- English
- Weight
- 107 KB
- Volume
- 21
- Category
- Article
- ISSN
- 0148-9062
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