2019DIN EN ISO 12957-1:2019-04 Geosynthetics - Determination of friction characteristics - Part 1: Direct shear test (ISO 12957-1:2018); German version EN ISO 12957-1:2018
2019DIN EN ISO 12957-1:2019 Geosynthetics - Determination of friction characteristics - Part 1: Direct shear test (ISO 12957-1:2018)
2018DIN EN ISO 12957-1:2018 Geosynthetics - Determination of friction characteristics - Part 1: Direct shear test (ISO/DIS 12957-1:2018); German and English version prEN ISO 12957-1:2018
2005DIN EN ISO 12957-1:2005 Geosynthetics - Determination of friction characteristics - Part 1: Direct shear test (ISO 12957-1:2005); German version EN ISO 12957-1:2005