Aspherical ophthalmoscopy lenses from Japan microform : determination of the Commission in investigation no. 731-TA-518 (final) under the Tariff Act of 1930, together with the information obtained in the investigation (USITC publication ; 2498)
Aspherical ophthalmoscopy lenses from Japan microform : determination of the Commission in investigation no. 731-TA-518 (final) under the Tariff Act of 1930, together with the information obtained in the investigation