| 000 | 00254nam a2200073 4500 | ||
|---|---|---|---|
| 080 |
_a _b |
||
| 245 | _aIEC: 422-1989; Supervision and maintenance guide for mineral insulating oils in electrical equipment | ||
| 100 | _aInternational Electrotechnical Commission | ||
| 260 |
_aGeneva _bIEC _c1989 |
||
| 300 | _a71 | ||
| 999 |
_c37838 _d37838 |
||