Is: 1885 (Part Iii/Sec 8) - 1974; Electrotechnical Vocabulary Part 3 Acoustics Section 8 Architectur

Indian Standards Institution

Is: 1885 (Part Iii/Sec 8) - 1974; Electrotechnical Vocabulary Part 3 Acoustics Section 8 Architectur - BIS 1975

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