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Gas-fired central heating boilers. Part 2-2. Specific standard for type B1 appliances
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Safety of power transformers, power supplies, reactors and similar products. Part 2-23. Particular requirements and tests for transformers and power supply units for construction sites
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Overhead collar nut for machine retaining devices. Design and dimensions
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Fur skins and packer pelts dressing and coloured. The method of determining the light resistance of the painting
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Brazing, soldering and tinning. Basic terms and definitions
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