Home / Standards / GB/T 7161-1987 GB/T 7161-1987 Active Unsealed radioactive substances--Identification and certification 非密封放射性物质 识别和证书 Standard Type GBT ICS 13.280 CCS F04 Status 现行 Issue Date 1987-01-07 Implementation 1987-10-01 Responsible Dept 国家标准委 Drafting Unit N/A