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State system of ensuring the uniformity of measurement. Measuring condenser microphones. Methods and means of verification
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Industrial automation systems and integration. Product data representation and exchange. Part 1271. Application module. State characterized
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Optical fibres. Part 2-30. Product specifications. Sectional specification for category А3 multimode fibres
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Household and similar electrical appliances. Safety. Part 2-55. Particular requirements for electrical appliances for use with aquariums and garden ponds
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