DIN EN ISO 14688-1-2013 土工学调查和试验.土壤的识识别与分类.第1部分:识别和描述(ISO 14688-1-2002+Amd 1-2013).德文版本EN ISO 14688-1-2002+A1-2013
Geotechnical investigation and testing - Identification and classification of soil - Part 1: Identification and description (ISO 14688-1:2002 + Amd 1:2013); German version EN ISO 14688-1:2002 + A1:2013