UNE-EN ISO 13567-1:2017 Technical product documentation - Organization and naming of layers for CAD - Part 1: Overview and principles (ISO 13567-1:2017) (Endorsed by Asociación Española de Normalización in December of 2017.)
2017UNE-EN ISO 13567-1:2017 Technical product documentation - Organization and naming of layers for CAD - Part 1: Overview and principles (ISO 13567-1:2017) (Endorsed by Asociación Española de Normalización in December of 2017.)