The high-speed Heinkel He 70 mail airplane
Schnellpostflugzeug He 70 <engl.>
1934
15 S., [4] Bl
Ill., graph. Darst
Buch
Englisch
The High-speed Heinkel He 70 Mail Airplane
NTRS | 1934
|Engineering Index Backfile | 1933
Engineering Index Backfile | 1933
Engineering Index Backfile | 1929
Heinkel airplane H.D. 39 for carrying newspapers
NTRS | 1926