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Methods for the petrographic analysis of coals. Part 2. Methods of preparing coal samples
Document status: Active
Manganese ores, concentrates and agglomerates. Methods for the determination of sulphur
Document status: Replaced by GOST 22772.7-96
Niobium pentoxide. Method for the determination of sulphur content
Document status: Active
Petroleum. Method for determination of hydrogen sulfide, methyl- and ethylmercaptans
Document status: Active
Optical brighteners. Method for determination of water solubility
Document status: Active