Russian standards PDF
Tests on indoor post insulators of organic material for systems with nominal voltages greater than 1000 V up to 300 kV
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Optical materials. Methods of measurements of reflective index
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All-or-nothing electrical relay. Application of the IEC quality assessment system for electronic components to all-or-nothing relays
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Cores for inductors and transformers for telecommunications. Part 2. Guides for drafting specifications
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Protective decorative coating accessories for products of light industry. General requirements
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