| 000 | 00556pam a2200169a 44500 | ||
|---|---|---|---|
| 082 |
_aTR _bRI-8628 |
||
| 100 | _aChekan,G. J. | ||
| 245 | 1 | _aINVESTIGATION OF LONGWALL GATEROAD ROOF SUPPORT CHARACTERISTICS AT POWHATAN NO.4 MINE INSTRUMENTATION PLAN | |
| 260 |
_a _bU.S. Bureau Of Mines, Washington, D.C. _c1902 |
||
| 300 | _a9 | ||
| 440 |
_aU.S.Bureau Of Mines Report Of Investigations _vBmri-8628 |
||
| 500 | _aBound With: Ri-8620 | ||
| 650 | _aUnited States Department Of Interior | ||
| 700 | _aBabich,D. R. | ||
| 964 | _gCIRC | ||
| 997 | _aTR292 C | ||
| 999 |
_c392209 _d392209 |
||