| 000 | nam a22 7a 4500 | ||
|---|---|---|---|
| 999 |
_c3897 _d3897 |
||
| 003 | Biblioteca INTEMIN | ||
| 005 | 20180601095342.0 | ||
| 007 | ta | ||
| 008 | 180527b xxu||||| |||| 00| 0 eng d | ||
| 041 | _ainglés | ||
| 080 | _a622 | ||
| 100 |
_aStrebig, Kelly C. _93547 |
||
| 245 |
_aEffect of depth of cut and bit type on the generation of respirable dust _cStrebig, Kelly C.; Zeller, H. William |
||
| 260 |
_aWashington _bBureau of mines _c1975 |
||
| 300 | _a16 p. | ||
| 440 |
_aRI 8042 _97181 |
||
| 650 |
_aMINERIA _93338 |
||
| 650 |
_aMINING _92163 |
||
| 653 | _aCORTADORAS | ||
| 653 | _aBITS (PERFORACION) | ||
| 653 | _aMINAS DE CARBON | ||
| 653 | _aCUTTING MACHINES | ||
| 653 | _aBITS (DRILLING AND BORING) | ||
| 653 | _aCOAL MINES | ||
| 700 |
_aZeller, H. William _98041 |
||
| 942 |
_2udc _cCR |
||