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Talc and talcomagnesite. Method for determination of residue insoluble in hydrochloric acid

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1-Phenyl-3-methyl-5-pyrazolone technical. Specifications

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Petroleum fuel. Mazut. Specifications

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Hard coals and anthracites (medium and high rank coals). Codification

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Peat fertilizers for agriculture. Specifications

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Reagents. Method of thin layer chromatography

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