✦ LIBER ✦
Developing a new method for roof support using sonic pin-setting machines : Morris, R L; Purcupile, J C US Bureau of Mines report OFR 7–82, 21 Dec 1977, 95P
- Publisher
- Elsevier Science
- Year
- 1982
- Tongue
- English
- Weight
- 97 KB
- Volume
- 19
- Category
- Article
- ISSN
- 0148-9062
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