BS 2497-4:1972

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Specification for a reference zero for the calibration of pure-tone audiometers. Normal threshold of hearing for pure tones by bone conduction | Status: Superseded, Withdrawn

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Publisher BS

File size 256.16 KB

Pages 7

Format PDF

Publication date 1972-07-25

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File size 256.16 KB

Pages 7

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Publication date 1972-07-25

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