| 000 | nam a22 7a 4500 | ||
|---|---|---|---|
| 999 |
_c3496 _d3496 |
||
| 003 | Biblioteca-INTEMIN | ||
| 005 | 20180529151109.0 | ||
| 008 | 180529b xxu||||| |||| 00| 0 eng d | ||
| 080 | _a622.807 | ||
| 100 |
_aWatson, P.J. _97637 |
||
| 245 |
_aSurvey of nuisance and biologically active dusts in metal and nonmetal mines _cWatson, P.J. |
||
| 260 |
_aWashington _bBureau of mines _c1987 |
||
| 650 |
_aMINERIA _965 |
||
| 650 |
_aCONTROL DE POLVO DE MINAS _97638 |
||
| 942 | _cBK | ||