DIN EN 50174-1 Berichtigung 1-2011
信息技术.布线安装.第1部分:安装规范和质量保证.德文版 EN 50174-1-2009+ A1-2011,勘误为DIN EN 50174-1(VDE0800-174-1)-2011-09
Information technology - Cabling installation - Part 1: Installation specification and quality assurance; German version EN 50174-1:2009 + A1:2011, Corrigendum to DIN EN 50174-1 (VDE 0800-174-1):2011-09