✦ LIBER ✦
Estimation of roof stability in narrow openings and production workings. Classification of rocks in the Olkusz region (In Polish) : Takuski, S; Sepial, J Gornictwo, V1, N3, 1977, P247–255
- Publisher
- Elsevier Science
- Year
- 1979
- Tongue
- English
- Weight
- 122 KB
- Volume
- 16
- Category
- Article
- ISSN
- 0148-9062
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