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Medicalel ectrical equipment. Part 2-66. Particular requirements for the basic safety and essential performance of hearing instruments and hearing instrument systems
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Reducer type crosses with thread diameter 14 mm on single fitting for tube connections on internal cone. Construction and dimensions
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Nickel. Cobalt. Method for determination of aluminium
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Kitchen utensils from special domestic glass. General specifications
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Tableware and household items made of plastics. General specifications
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Coals and their products. Sampling from the warehouse
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