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Milk. Determination of calcium content. Titrimetric method
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Dependability in technics. Dependability of item. Terms and definitions
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Basic norms of interchangeability. Marks on the parts with the left thread
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Tin-lead solders. Spectrochemical method for the determination of addition of antimony, copper, bismuth, arsenic, iron, nickel, zinc, aluminium using the synthetic graduated samples
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Domestic heaters, do not connect to a chimney for liquefied petroleum gases
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