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METROLOGY AND MEASUREMENT. PHYSICAL PHENOMENA
BOS 121: 2005 , The measurement of noise emitted by road vehicles when stationary – Code of practice
BOS IEC 60118-7 , Hearing aids - Part 7: Measurement of the performance characteristics of hearing aids for quality inspection for delivery purposes
BOS IEC 60118-7 , Hearing aids - Part 7: Measurement of the performance characteristics of hearing aids for quality inspection for delivery purposes
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