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Zirconium containing refractory materials and products. Methods for determination of titanium dioxide
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Lever balance of general use. Limits of weighing. Norms of accuracy
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Zinc concentrates. Method for the determination of calcium oxide, magnesium oxide and aluminium oxide
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Industrial all-wool and half-wool felts for musical key instruments. Technical specification
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Textiles. Method for the determination of the degree of distortion
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