✦ LIBER ✦
Rapid progress of mechanised in-seam drifting with a sectional roadheader in the collieries of the Federal Republic of Germany (in French) : Mertens, V Publ Tech Charbon Fr, N4, 1976, P249–274
- Publisher
- Elsevier Science
- Year
- 1977
- Tongue
- English
- Weight
- 91 KB
- Volume
- 14
- Category
- Article
- ISSN
- 0148-9062
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