NF S11-427*NF EN ISO 8980-5:2005 Ophtalmic optics - Uncut finished spectacle lenses - Part 5 : minimum requirements for spectacle lens surfaces claimed to be abrasion-resistant
2005NF S11-427*NF EN ISO 8980-5:2005 Ophtalmic optics - Uncut finished spectacle lenses - Part 5 : minimum requirements for spectacle lens surfaces claimed to be abrasion-resistant