Free zones in ports : hearings before the Subcommittee of the Committee on commerce, United States Senate, Sixth-sixth Congress, first session, on S. 3170, a bill to provide for the establishment, operation, and maintenance of foreign trade zones in ports of entry of the United States, to expedite and encourage foreign commerce, and for other purposes. October 10, 11, and 21, 1919
United States. Congress. Senate. Committee on Commerce. Subcommittee on S. 3170