IS: 1885(PartIII/Sec4):Electrotechnical Vocabulary Part3 Acoustics Section4 Sonics, Ultrasonics and Underwater Acoustics

IS: 1885(PartIII/Sec4):Electrotechnical Vocabulary Part3 Acoustics Section4 Sonics, Ultrasonics and Underwater Acoustics - New Delhi BIS 1967 - 12p

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