Helicopter problems.

Bibliographic Details
Corporate Author:	United States. National Advisory Committee for Aeronautics
Format:	Government Document eBook
Language:	English
Published:	[Washington] : [s.n.], 1937.
Subjects:	Helicopters. Aeronautics > Research.
Online Access:	Electronic resource (PDF)

Description
Item Description:	Translation by J. Vanier from an article in Luftfahrtforschung, volume 14, number 1, Jan. 20, 1937, pp. 1-13.
Physical Description:	1 online resource (43 pages), digital, PDF file