Hearings and Report of Aeronautics Subcommittee on Gliders, Autogiros, Helicopters, and Underground Hangars : hearings before the United States House Committee on Naval Affairs, Seventy-Seventh Congress, first session, on May 27, June 10, 12, 13, 17, 1941.
Committee Serial No. 129.
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Format: | Government Document Book |
Language: | English |
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Washington :
U.S. G.P.O.,
1941.
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