DIN EN ISO 11980:2013-03 Ophthalmic optics - Contact lenses and contact lens care products - Guidance for clinical investigations (ISO 11980:2012); German version EN ISO 11980:2012
2013DIN EN ISO 11980:2013-03 Ophthalmic optics - Contact lenses and contact lens care products - Guidance for clinical investigations (ISO 11980:2012); German version EN ISO 11980:2012
2013DIN EN ISO 11980:2013 Ophthalmic optics - Contact lenses and contact lens care products - Guidance for clinical investigations (ISO 11980:2012); German version EN ISO 11980:2012