Prezentul standard stabile?te regulile pentru verificarea calit??ii minereurilor brute ?i preparate, feroase, neferoase, rare ?i pre?ioase.
STAS 2769-1990 history
1990STAS 2769-1990 Ferrous, non-ferrous, rare and precious prepared and raw ores. General rules for quality checking up and analysis results establishment