ISO 14688-2:2004/Amd 1:2013 Geotechnical investigation and testing — Identification and classification of soil — Part 2: Principles for a classification — Amendment 1
2017ISO 14688-2:2017 Geotechnical investigation and testing — Identification and classification of soil — Part 2: Principles for a classification — Amendment 1
2013ISO 14688-2:2004/Amd 1:2013 Geotechnical investigation and testing — Identification and classification of soil — Part 2: Principles for a classification — Amendment 1
2004ISO 14688-2:2004 Geotechnical investigation and testing - Identification and classification of soil - Part 2: Principles for a classification