Geotechnical Investigation and testing - Identification and classification of soil - Part 1: Identification and description (ISO 14688-1:2002); German version EN ISO 14688-1:2002— 20 стр.
Geotechnical investigation and testing - Identification and classification of rock - Part 1: Identification and description (ISO 14689-1:2003); German version EN ISO 14689-1:2003— 26 стр.
Geotechnical investigation and testing - Identification and classification of rock - Part 1: Identification and description (ISO 14689-1:2003); German version EN ISO 14689-1:2003— 26 стр.