Home / Standards / GB/T 15120.4-1994 GB/T 15120.4-1994 Abolished Identification cards--Recording technique--Part 4:Location of read-only magnetic tracks--Tracks 1 and 2 识别卡 记录技术 第4部分:只读磁道的第1磁道和第2磁道的位置 Standard Type GBT ICS 35.220.10 CCS L64 Status 废止 Issue Date 1994-07-16 Implementation 1995-03-01 Responsible Dept 国家标准委 Drafting Unit N/A