Home / Standards / GB/T 17157-1997 GB/T 17157-1997 Abolished Specifications for aerial photogrammetric digital mapping of 1∶25000,1∶50000 and 1∶100000 topographic maps 1∶25000、1∶50000、1∶100000地形图航空摄影测量数字化测图规范 Standard Type GBT ICS 07.040 CCS A77 Status 废止 Issue Date 1997-12-16 Implementation 1998-08-01 Responsible Dept 自然资源部(测绘地理) Drafting Unit N/A