Russian standards PDF
State system for ensuring the uniformity of measurements. Units of quantities
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State system for ensuring the uniformity of measurements. Measurement standards. Choice, recognition, use, conservation and documentation
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Occupational safety standarts system. Filtering respiratory protective device. Self-rescuer filtering for protection against carbon monoxide with a mouthpiece assembly. General specifications
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Rolling bearings. Сylindrical roller bearings without inner or outer ring. Classification, guidance for application and operation
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