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Phthalic anhydride. Method of determination of acid compounds
Document status: Active
Ion-exchange resins. Anionites. Specifications
Document status: Replaced by GOST 20301-2022
Reagents. Manganese (II) acetate 4-aqueous. Specifications
Document status: Active
Iron and manganese ores, concentrates, agglomerates and pellets. Methods for determination of real, middle, bulk density and porosity
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