GB/T 12898-2009

Active

Specifications for the third and fourth order leveling

国家三、四等水准测量规范

Standard Type
GBT
ICS
07.040
CCS
A76
Status
现行
Issue Date
2009-05-06
Implementation
2009-10-01
Responsible Dept
自然资源部（测绘地理）
Drafting Unit
N/A