DIN ISO/TS 22475-3-2008 土工调查和测试.取样方法和地下水测量.第3部分:第三方对企业和个人的一致性评估
Geotechnical investigation and testing - Sampling methods and groundwater measurements - Part 3: Conformity assessment of enterprises and personnel by third party (ISO/TS 22475-3:2007); German version CEN ISO/TS 22475-3:2007