Merchants' aircraft : Hearing beforre the Committee on commerce, U.S. Senate, 71st Cong., 3d sess. on S. 5078, a bill to provide for the establishment and development of American air-transport services overseas, to encourage construction in the United States by American capital of American airships and other aircraft for the use of foreign commerce, and for other purposes. Feb. 6, 1931.
- Aeronautics, Commercial United States
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