IS: 1885 (Part 60) - 1993/IEC 50 (426) - 1990; Electrotechnical vocabulary Part 60 electrical apparatus for explosive atmospheres
IS: 1885 (Part 60) - 1993/IEC 50 (426) - 1990; Electrotechnical vocabulary Part 60 electrical apparatus for explosive atmospheres
- New Delhi BIS 1993
- 7p
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