| 000 | nam a22 7a 4500 | ||
|---|---|---|---|
| 999 |
_c3432 _d3432 |
||
| 003 | Bilbioteca-INTEMIN | ||
| 005 | 20180529095912.0 | ||
| 008 | 180529b xxu||||| |||| 00| 0 eng d | ||
| 080 | _a622.87 | ||
| 100 |
_aUnger, Richard L. _97606 |
||
| 245 |
_aBureau of mines researcha into reducing materials handling injuries _cUnger, Richard L. |
||
| 260 |
_aWashington _bBureau of mines _c1986 |
||
| 650 |
_aMINERIA _965 |
||
| 650 |
_aCONTROL DE LAS CONDICIONES AMBIETALES _97607 |
||
| 942 | _cBK | ||