Ophthalmic optics - Uncut finished spectacle lenses - Part 2: Specifications for power-variation lenses (ISO/DIS 8980-2:2016); German and English version prEN ISO 8980-2:2016
Ophthalmic optics - Uncut finished spectacle lenses - Part 2: Specifications for power-variation lenses (ISO 8980-2:2017); German version EN ISO 8980-2:2017— 17 стр.