IS: 2032 (Part VII) - 1965 (with amendment no.1 - 1966) : Graphical Symbols Used in Electrotechnology Part 7 Switchgear and Auxiliaries
IS: 2032 (Part VII) - 1965 (with amendment no.1 - 1966) : Graphical Symbols Used in Electrotechnology Part 7 Switchgear and Auxiliaries
- New Delhi BIS 1966
- 9+1p
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