Civil tiltrotor applications research microform : hearing before the Subcommittee on Transportation, Aviation, and Materials of the Committee on Science, Space, and Technology, U.S. House of Representatives, One Hundred First Congress, second session, July 17, 1990.
United States.Congress.House.Committee on Science, Space, and Technology.Subcommittee on Transportation, Aviation, and Materials.
Washington : U.S. G.P.O. : For sale by the Supt. of Docs., Congressional Sales Office, U.S. G.P.O.,
1990.
"No. 155."
Microfiche.
Convertiplanes.
Vertically rising aircraft.