✦ LIBER ✦
Caving of roof rocks during working of gently sloping coal seams with mechanized OMKTM systems. 3F : Ermolaev, AM IPK, Min. Coal Ind. Kemerovo, SU Sov. Min. Sci., V10, N1, 1974, P93–96
- Publisher
- Elsevier Science
- Year
- 1975
- Tongue
- English
- Weight
- 94 KB
- Volume
- 12
- Category
- Article
- ISSN
- 0148-9062
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