2015SN/T 0066-2015 Methods for sampling and sample preparation of chrome ores in bulk for import
1992SN 0066-1992 Method for samplling and sample preparationof chrome ores in bulk for import
SN 0066-1992 Method for samplling and sample preparationof chrome ores in bulk for import was changed to SN/T 0066-2015 Methods for sampling and sample preparation of chrome ores in bulk for import.