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Non-metallic building materials, porous aggregates from dense rocks, porous, from industrial waste for concrete. Classification

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Gas counters. Method of threshold voltage measurement

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Mining. Explosion safety. General requirements

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Occupational safety standards system. Individual protective devices for legs. Technical requirements and test methods for footwear components. Part 1. Metallic toecaps

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Information technologies. Biometrics. Life cycle stages and steps of biometric systems. General principles

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Stop valves. Main parameters

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