Devices for the connection of luminaires for household and similar purposes. Part 1. Particular requirements for twist-on connecting devices
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Heat exchangers. Test methods for determining the power criteria of air/air and an air/exhaust gas mixture heat recovery devices
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Electric and optical fibre cables. Test methods for non-metallic materials. Part 203. General tests. Measurement of overall dimensions
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Tungsten halogen lamps (non-vehicle). Performance specifications
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Explosionproof electrical apparatus. Special construction. Technical requirements and methods of testing
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