Propelled lighter-than-air vehicles
Subtitle: hearings before the Subcommittee on Science, Technology, and Space of the Committee on Commerce, Science, and Transportation, Ninety-sixth Congress, first session ... February 27 and March 1, 1979.
Publisher: U.S. Govt. Print. Off.
Published: 1979
Place of publication: Washington
Language: eng
Number of pages: 154
Subjects: Airships.; Helicopters.
Notes: "Serial no. 96-6."