Home / Standards / GB/T 13989-2012 GB/T 13989-2012 Active Subdivision and numbering for the national primary scale topographic maps 国家基本比例尺地形图分幅和编号 Standard Type GBT ICS 07.040 CCS A79 Status 现行 Issue Date 2012-06-29 Implementation 2012-10-01 Responsible Dept 自然资源部(测绘地理) Drafting Unit N/A