State system for ensuring the Uniformity of measurements. State verification schedule for measuring instruments of alternate electrical voltage to 1000 V in the frequency range from 1·10-2 to 2·10-9 Hz
Textiles. Quantitative chemical analysis. Part 6. Mixtures of viscose, certain types of cupro, modal or lyocell with certain other fibres (method using formic acid and zinc chloride)
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