United States imports and trade agreements concessions.
Statistics of United States imports in selected years from 1931 to 1939 for each product upon which the United States has granted a concession in trade agreements, together with the rates of tariff duty before and after the concession ...

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Item Link Original Source
Full view   v.1-3 University of Michigan
Full view   v.4-6 University of Michigan
Full view   v.7-8 University of Michigan