Russian standards PDF
State system for ensuring the uniformity of measurements. Acoustics. Reference zero for the calibration of audiometric equipment. Part 4. Reference levels for narrow-band masking noise
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State system for ensuring the uniformity of measurements. Acoustics. Reference zero for the calibration of audiometric equipment. Part 6. Reference threshold of hearing for test signals of short duration
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State system for ensuring the uniformity of measurements. Acoustics. Reference zero for the calibration of audiometric equipment. Part 8. Reference equivalent threshold sound pressure levels of pure tones for circumaural earphones
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Animal and vegetable fats and oils. Determination of iodine value
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Single-head wrenches for lower torque applications. Widths of heads. Basic parameters
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