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Petroleum products and used oils. Determination of polychlorinated biphenyl (PCB) and related products. Part 1. Separation and determination of selected PCB congeners by gas chromatography (GC) using an electron capture detector (ECD)

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The Caucasus coals for domestic needs. Specifications

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Copper and complex ores and products of their processing. Methods of zinc weight fraction measurement

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Essential oil of bergamot [Citrus aurantium L. subsp. bergamia (Wight et Arnott) Engler], Italian type. Specifications

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Niobium pentoxide. Method for the determination of potassium and sodium content

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Talc and talcomagnesite. Method for determination of density

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