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Manganese ores, concentrates and agglomerates. Methods for determination of total iron
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Perchloroethylene for vapor-degreasing. General technical requirements
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Reagents. Nickel (II) sulphate, 7-aqueous. Specifications
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Oil and gas wells. Geophysical researches and works in wells. General requirements
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Petroleum products. Fuels (class F). Classification. Part 3. Family L. Liquefied petroleum gases
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