✦ LIBER ✦
Formation of fractures in the main roof in the vicinity of a working face, in the light of investigations carried out by the geophysical electrical resistance method (in Polish) : Goszcz, A Przegl Gorn, V33, N9, Sept 1977, P397–402
- Publisher
- Elsevier Science
- Year
- 1978
- Tongue
- English
- Weight
- 111 KB
- Volume
- 15
- Category
- Article
- ISSN
- 0148-9062
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