"États-Unis," . . "Etats-Unis. Commerce extérieur. Documents." . . "Etats-Unis. Committee on ways and means." . . "Tariff Law and legislation United States." . . . . "Foreign trade regulation United States." . . . . . . . . . . . . "Selected provisions of the tariff and trade laws of the United States and related materials"@en . "Selected provisions of the tariff and trade laws of the United States and related materials" . . . . . . . . . . . . . "Committee on Ways and Means. 90th Congress (2d session. Committee print)," . . "Etats-Unis. Douanes." . .