ISO 14688-1:2002/Amd 1:2013 Geotechnical investigation and testing — Identification and classification of soil — Part 1: Identification and description — Amendment 1
2017ISO 14688-1:2017 Geotechnical investigation and testing - Identification and classification of soil - Part 1: Identification and description
2013ISO 14688-1:2002/Amd 1:2013 Geotechnical investigation and testing — Identification and classification of soil — Part 1: Identification and description — Amendment 1
2002ISO 14688-1:2002 Geotechnical engineering - Identification and classification of soil - Part 1: Identification and description