Air commerce act, 1926. Hearings before a subcommittee of the committee on Interstate and Foreign Commerce, Seventy third Congress, second session, on H.R. 9599, a bill to amned the air commerce act of 1926, and to increase the efficiency of the aeronautics branch of the department of commerce with respect to the development and regulation of civil aeronautics. May 30 and June 1, 1934

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