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Seamless and welded steel tubes. Part 4. Liquid penetrant inspection for the detection of surface imperfections
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Household electrical refrigerating appliances. Performance and test methods
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Fibre and wood particle boards terms and definitions
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Drink milk for preschool and school age children. Specifications
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United power system and isolated power systems. Information model of powe rindustry. Profile of the commercial electricity metering information model
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