| 000 | 00455nam a22001457a 4500 | ||
|---|---|---|---|
| 003 | OSt | ||
| 008 | 090807t xxu||||| |||| 00| 0 eng d | ||
| 082 | _a621.31-213.34 | ||
| 110 | _aIndian standards institution | ||
| 240 | _aIndian standard | ||
| 245 | _aSpecification for sand-filled protection of electrical equipment for use in explosive atmospheres | ||
| 260 |
_aNew Delhi _bIndian standards institution _c1975 |
||
| 653 | _aIS:7724-1975 | ||
| 942 | _cISI | ||
| 999 |
_c336693 _d336693 |
||