Koolhoven against Zeppelins
Letectví + kosmonautika ; 74 , 25-26 ; 88-89
1998
Article (Journal)
Unknown
Some aspects of hybrid-zeppelins
NTRS | 1975
|Building zeppelins in the United States
Engineering Index Backfile | 1930
|Largest and fastest of the zeppelins
Engineering Index Backfile | 1924
Goodyear begins assembling advanced-tech zeppelins
Online Contents | 2013
|Goodyear begins assembling advanced-tech zeppelins
Online Contents | 2013
|