| 000 | 00312pam a2200109a 44500 | ||
|---|---|---|---|
| 082 |
_aTR _bIC-7755 |
||
| 100 | _aIrving Hartmann | ||
| 245 | 1 | _aRock dusting and sampling including wet rock dusting,at the bereau of mines experimental coal mine | |
| 260 |
_a _b _c |
||
| 700 | _aJames Westfield | ||
| 997 | _aTR5351 C | ||
| 999 |
_c405449 _d405449 |
||