UNE-EN ISO 18391:2016 Geometrical product specifications (GPS) - Population specification (ISO 18391:2016) (Endorsed by Asociación Española de Normalización in May of 2017.)
2017UNE-EN ISO 18391:2016 Geometrical product specifications (GPS) - Population specification (ISO 18391:2016) (Endorsed by Asociación Española de Normalización in May of 2017.)