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. 1-2 University of California
Full view   v. 3 University of California
Full view   v. 4 University of California
Full view   v. 5 University of California
Full view   v. 6 University of California
Full view   v. 7 University of California
Full view   v. 8 University of California