Tungsten ore concentrates from the People's Republic of China : determination of the Commission in investigation no. 731-TA-497 (preliminary) under the Tariff Act of 1930, together with the information obtained in the investigation (USITC publication ; 2367)
Tungsten ore concentrates from the People's Republic of China : determination of the Commission in investigation no. 731-TA-497 (preliminary) under the Tariff Act of 1930, together with the information obtained in the investigation