| 000 | 00396nam a2200109Ia 4500 | ||
|---|---|---|---|
| 100 | _aIndian Standards Institution | ||
| 942 | _cBK | ||
| 245 |
_aIndian standard code of practice for exploration by pits, trenches, drifts and shafts _bsub-surface exploration sectional committee, BDC 49 |
||
| 260 |
_aIndian Standards Institution, New Delhi _c1968 |
||
| 082 | _aIS:4453-1967 624.15 I.S.I. | ||
| 300 | _a15 | ||
| 999 |
_c4729 _d4729 |
||