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.
German construction contract procedures (VOB) - Part C: General technical specifications in construction contracts (ATV) - Underground construction work— 22 стр.
German construction contract procedures (VOB) - Part C: General technical specifications in construction contracts (ATV) - Underground construction work— 20 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.