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

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