IS: 1885 (Part 37) - 1993/IEC 50 (691) - 1973; Electrotechnical vocabulary Part 37 tariffs for electricity
IS: 1885 (Part 37) - 1993/IEC 50 (691) - 1973; Electrotechnical vocabulary Part 37 tariffs for electricity
- New Delhi BIS 1993
- 11p
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