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Copper and complex ores, and products of their processing. Atomic absorption spectrometry method for weight fraction of measurement of copper, zinc, lead, bismuth, cadmium, antimony

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Reagents and matters of special purity. Methods for preparation of buffer solutions

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Petroleum and natural gas industries. Downhole equipment. Packers and bridge plugs. General technical requirements

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Light and middle distillate fuels. Determination of sizing and counting dispersive particles by automatic particle counter

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Overhung supports of suspended vertical vessels and apparatus. Basic dimensions

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Hard coal and coke. Mechanical sampling. Part 6. Coke. Preparation of test samples

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