Home / Standards / GB/T 30713-2014 GB/T 30713-2014 Active Microscopic method of ink stone identification 砚石 显微鉴定方法 Standard Type GBT ICS 39.060 CCS D59 Status 现行 Issue Date 2014-03-27 Implementation 2014-10-01 Responsible Dept 自然资源部(国土) Drafting Unit N/A