✦ LIBER ✦
Comprehensive ground control study of a mechanised longwall operation. Final report (in 2 vols) : Harza Engineering Co report, 30 Jan 1976, Vol 1: 151P (PB 262475/AS), Vol 2: 270P (PB 262476/AS). USBM OFR 5–77
- Publisher
- Elsevier Science
- Year
- 1977
- Tongue
- English
- Weight
- 103 KB
- Volume
- 14
- Category
- Article
- ISSN
- 0148-9062
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