[New government standard for sunlight-protective eyeglass lenses].
D005135:Eye Protective Devices / Q000592:standards*; D005139:Eyeglasses / Q000592:standards*; D011482:Protective Devices / Q000592:standards*; D013472:Sunlight; D014586:USSR
Novyĭ gosudarstvennyĭ standart na solntsezashchitnye ochkovye linzy