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Metal frame yield supports. Arch support. General specifications
Document status: Replaced by GOST 31560-2024
Concentrated kaolin. Methods for determination of ferric oxide (III)
Document status: Active
Nitric acid for industrial use. Evaluation of the nitric acid concentration by measurement of density
Document status: Active
Niobium pentoxide. Method for the determination of potassium and sodium content
Document status: Active