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| Author | AENOR |
|---|---|
| Editor | AENOR |
| Document type | Standard |
| Format | File |
| ICS | 01.040.29 : Electrical engineering (Vocabularies) 29.020 : Electrical engineering in general |
| Number of pages | 12 |
| Cross references | IEC 50-691:1973 Identical |
| Year | 1970 |
| Country | Spain |