Les hélices de sustentation
By: par Louis Bréguet.
Publisher: Imp. "Labor"
Published: 1930
Place of publication: [Paris
Language: fre
Number of pages: 21
Subjects: Propellers, Aerial.; Helicopters.
Notes: Cover-title.
"Communication faite au IVe Congrès d'aéronautique (Nancy, 18-28 septembre 1909)"