IS: 1885 (part 10) - 1993/IEC Pub. 0050 (448) - 1987; Electrotechnical vocabulary Part 10 Power system protection
IS: 1885 (part 10) - 1993/IEC Pub. 0050 (448) - 1987; Electrotechnical vocabulary Part 10 Power system protection
- New Delhi BIS 1993
- 7p
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