| 000 | 00312nam a2200073 4500 | ||
|---|---|---|---|
| 080 |
_a _b |
||
| 245 | _aIS: 9921 (PART 1) - 1981; Specification for alternating current disconnectors(Isolators) and earthing switches for voltages above 1 000 V Part 1; general and definitions | ||
| 700 | _aBUREAU OF INDIAN STANDARDS | ||
| 260 |
_aNew Delhi _bBIS _c1981 |
||
| 300 | _a13p | ||
| 999 |
_c34986 _d34986 |
||