Is:01885 (Part Iv/Sec 2) - 1973; Electrotechnical Vocabulary Part 4 Electron Tubes Section 2 X-Ray T
Indian Standards Institution
Is:01885 (Part Iv/Sec 2) - 1973; Electrotechnical Vocabulary Part 4 Electron Tubes Section 2 X-Ray T - BIS 1974
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Is:01885 (Part Iv/Sec 2) - 1973; Electrotechnical Vocabulary Part 4 Electron Tubes Section 2 X-Ray T - BIS 1974
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