Is: 1885 (Part Xxvi) - 1968; Electrotechnical Vocabulary Part 26 Telecommunication Relays
Indian Standards Institution
Is: 1885 (Part Xxvi) - 1968; Electrotechnical Vocabulary Part 26 Telecommunication Relays - BIS 1968
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Is: 1885 (Part Xxvi) - 1968; Electrotechnical Vocabulary Part 26 Telecommunication Relays - BIS 1968
/