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Завершение срока действия 30.05.2002
Опубликован 01.11.1980

Boric acid, boric oxide, disodium tetraborates and crude sodium borates for industrial use; determination of total nickel content of boric acid, boric oxide and disodium tetraborates and the alkali-soluble nickel content of crude sodium borates; furil alpha-dioxime photometric method