Geotechnical investigation and testing - Laboratory testing of soil - Part 11: Determination of permeability by constant and falling head (ISO/TS 17892-11:2004); German version CEN ISO/TS 17892-11:2004— 22 стр.
Geotechnical investigation and testing - Laboratory testing of soil - Part 11: Permeability tests (ISO 17892-11:2019); German version EN ISO 17892-11:2019— 32 стр.
Geotechnical investigation and testing - Identification and classification of soil - Part 2: Principles for a classification (ISO 14688-2:2017); German version EN ISO 14688-2:2018— 21 стр.