| 000 | 00387nam a2200133Ia 4500 | ||
|---|---|---|---|
| 008 | 190711s9999 xx 000 0 und d | ||
| 082 | _a622.6 U58 | ||
| 100 | _aUNITED STATES DEPARTMENT OF THE INTERIOR BUREAU OF MINES | ||
| 245 | 0 | _aMINE HOIST ELECTRICAL SYSTEMS STUDY | |
| 260 |
_aSPRINGFIELD _bN.T.I.S |
||
| 300 | _a29X23 | ||
| 490 | _aREPORT NO.83-86 PB 86-235132 | ||
| 942 |
_cBK _2DDC |
||
| 999 |
_c21974 _d21974 |
||