| 000 | nam a22 7a 4500 | ||
|---|---|---|---|
| 999 |
_c3294 _d3294 |
||
| 003 | Biblioteca INTEMIN | ||
| 005 | 20180527225952.0 | ||
| 007 | Libro | ||
| 008 | 180527b xxu||||| |||| 00| 0 eng d | ||
| 041 | _aEN | ||
| 080 | _a66 | ||
| 100 |
_aJohnson, Thys B. _97322 |
||
| 245 |
_aImproving returns from mine products through use of operations research techniques _cJohnson, Thys B. |
||
| 260 |
_aWashington _bBureau of Mines _c1969 |
||
| 300 |
_aii, 78 p. _bil _c26 cm _e1 map |
||
| 440 |
_aRI _v7230 _97323 |
||
| 650 |
_aoperations research _97324 |
||
| 653 | _aMineral industries | ||
| 653 | _aProduction standards | ||
| 942 | _cBK | ||