Heat-treated steels, alloy steels and free-cutting steels - Part 17: Ball and roller bearing steels (ISO 683-17:1999); German version EN ISO 683-17:1999— 20 стр.
Health and safety in welding and allied processes - Equipment for capture and separation of welding fume - Part 1: Requirements for and testing and marking of separation efficiency (ISO/DIS 15012-1:2011); German version prEN ISO 15012-1:2011