✦ LIBER ✦
Example of a safe method for a longwall face to approach old workings under conditions of high risk of outbursts (In Polish) : Marcela, E Przegl Gorn V39, N7–8, July–Aug 1983, P293–301
- Publisher
- Elsevier Science
- Year
- 1984
- Tongue
- English
- Weight
- 105 KB
- Volume
- 21
- Category
- Article
- ISSN
- 0148-9062
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