✦ LIBER ✦
New instruments for establishing the strength of country rock in workings and road headings (in German and English) : Gwiazda, J B Gluckauf, V117, N7, 2 April 1981, P375–377 (English version P166–167)
- Publisher
- Elsevier Science
- Year
- 1981
- Tongue
- English
- Weight
- 108 KB
- Volume
- 18
- Category
- Article
- ISSN
- 0148-9062
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