Russian standards PDF
Safety requirements for radio transmitting equipment. General requirements and terminology
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Electroacoustics. Audiometric equipment. Part 3. Test signals of short duration
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Electroacoustics. Audiometric equipment. Part 6. Instruments for the measurement of otoacoustic emissions
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Electroacoustics. Audiometric equipment. Part 7. Instruments for the measurement of auditory brainstem responses
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Leather. Chemical tests. Determination of pH and difference figure
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Textiles. Determination of fabric propensity to surface pilling, fuzzing or matting. Part 1. Pilling box method
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