The Heinkel commercial airplane H.D. 40.

Bibliographic Details

Corporate Authors:	Ernst Heinkel-Flugzeugwerke, United States. National Advisory Committee for Aeronautics
Format:	Book
Language:	English
Published:	Washington, [D.C.] : National Advisory Committee for Aeronautics, [1927]
Series:	Aircraft circulars ; no. 64.
Subjects:	Heinkel H.D. 40 (Transport plane)