| 000 | 00478nam a22001577a 4500 | ||
|---|---|---|---|
| 003 | OSt | ||
| 008 | 090807t xxu||||| |||| 00| 0 eng d | ||
| 082 | _a622.142:006.76 | ||
| 110 | _aIndian standards institution | ||
| 245 | _aCode of practice for subsurface exploration by pits,trenches,drifts and shafts/1st rev. | ||
| 250 | _a1st rev.ed. | ||
| 653 | _aIS:4453-1980 | ||
| 942 |
_cISI _2ddc |
||
| 260 |
_aNew Delhi _bIndian standards institution _c1980 |
||
| 240 | _aIndian standard | ||
| 999 |
_c336504 _d336504 |
||