Vocabulario Electrotécnico. Magnetismo. (Compelemento B)
Electrotechnical Vocabulary. Magnetism. (Supplement B)
Vocabulaire Electrotechnique. Magnetisme. ( Complément B)
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CTN 200 - Basic electrical standards
IEC 50-901B:1978 (Identical)
It is cancelled by: UNE 21302-221:1991
