Home / Standards / GB/T 35636-2017 GB/T 35636-2017 Active Specification for surveying and mapping of urban underground space 城市地下空间测绘规范 Standard Type GBT ICS 07.040 CCS A77 Status 现行 Issue Date 2017-12-29 Implementation 2018-07-01 Responsible Dept 自然资源部(测绘地理) Drafting Unit N/A