Helicopter acoustics : proceedings of an International Specialists Symposium sponsored by the American Helicopter Society, Washington, D.C. ; the U.S. Army Research Office, Durham, North Carolina ; and the Langley Research Center, Hampton, Virginia, and held at Langley Research Center, May 22-24, 1978.

Bibliographic Details
Corporate Authors:	International Specialists Symposium on Helicopter Acoustics Langley Research Center, Langley Research Center, United States. Army Research Office--Durham, N.C, American Helicopter Society
Format:	Government Document Conference Proceeding Book
Language:	English
Published:	[Washington] : Springfield, Va. : National Aeronautics and Space Administration, Scientific and Technical Information Office ; For sale by the National Technical Information Service, 1978.
Series:	NASA conference publication ; 2052.
Subjects:	Helicopters > Congresses. Acoustical engineering > Congresses. Noise control > Congresses. Acoustical engineering. Helicopters. Noise control. Conference papers and proceedings.

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