| 000 | 00451pam a2200133a 44500 | ||
|---|---|---|---|
| 082 |
_aUSBM _bRI-7787 |
||
| 100 | _aRad,P F,Schmidt,R L | ||
| 245 | 1 |
_aTUNNELING MACHINE RESEARCH _cDEVELOPMENT OF AN EXPERIMENTAL FULL-SCALE RESEARCH ROCK CUTTING DEVICE |
|
| 260 |
_a _bU. S. Dept. Of The Interior, Bureau Of Mines,[S. L.] _c1973 |
||
| 300 | _a18 | ||
| 500 | _aBound With Usbm Ri-7771-86, 7788-90 Lack No. 7775. | ||
| 964 | _gCIRC | ||
| 997 | _aTR11108 C | ||
| 999 |
_c395945 _d395945 |
||