| 000 | 00623nam a22001337a 4500 | ||
|---|---|---|---|
| 008 | 241106b |||||||| |||| 00| 0 eng d | ||
| 040 |
_aNational Science Library _cNational Science Library |
||
| 080 |
_a620.91:624.133 _bL7 |
||
| 245 |
_aEnergy resources and excavation technology _c/ Proceedings 18th U S Symposium On Rock Mechanics Held At Keystone, Colorado June 22-24, 1977 Sponsored By The Colorado School Of Mines With Cooperation From U S National Committee For Rock Mechanics |
||
| 260 |
_aColorado: _bColorado School Of Mines Press, _c1979 |
||
| 300 | _axxiii, 5A5-6p. | ||
| 650 | _aProceedings | ||
| 942 |
_2udc _cPR |
||
| 999 |
_c67725 _d67725 |
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