GOST 8.315-1991 State system for ensuring the uniformity of measuring. Reference materials. Basic principles, ways of development, certification, approval, registration and use
GOST 851.1-1993 history
1993GOST 851.1-1993 Primary magnesium. Methods for determination of iron
1987GOST 851.1-1987 Primary magnesium. Method for the determination of iron