✦ LIBER ✦
Stability and determination of the thickness of a protective coal bench under a weak immediate roof (in Polish) : Kidybinski, A; Michalski, A Przegl Gorn, V33, N12, Dec 1977, P551–558
- Publisher
- Elsevier Science
- Year
- 1978
- Tongue
- English
- Weight
- 108 KB
- Volume
- 15
- Category
- Article
- ISSN
- 0148-9062
No coin nor oath required. For personal study only.