Home / Standards / GB/T 2007.3-1987 GB/T 2007.3-1987 Active General rules for the sampling and sample preparation of minerals in bulk--Experimental method for evaluation of quality variation 散装矿产品取样、制样通则 评定品质波动试验方法 Standard Type GBT ICS 73-010 CCS D04 Status 现行 Issue Date 1987-12-19 Implementation 1988-10-01 Responsible Dept 市场监管总局 Drafting Unit N/A