✦ LIBER ✦
A revision of the graphical method for assessing the excavatability of rock : G. S. Pettifer & P. G. Fookes, Quarterly Journal of Engineering Geology, 27(2), 1994, pp 145–164
- Publisher
- Elsevier Science
- Year
- 1994
- Tongue
- English
- Weight
- 127 KB
- Volume
- 31
- Category
- Article
- ISSN
- 0148-9062
No coin nor oath required. For personal study only.