Russian standards PDF

Hand operated socket wrenches with detachable heads. Connecting internal and external squares. Dimensions

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Phthalic anhydride for industrial use. General requirements for methods of analysis

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Phthalic anhydride for industrial use. Method for the determination of colour stability

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Phthalic anhydride for industrial use. Method for the determination of colour after treatment with sulphuric acid

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Phthalic anhydride for industrial use. Method for the determination of ash

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Phthalic anhydride for industrial use. Method for the determination of impurities oxidirable in the cold by potassium permanganate

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