Dirigible balloons : instruction paper
2011
97 S.
Book
English
RVK: | ZO 7320 |
The critical speed of dirigible balloons
Engineering Index Backfile | 1904
|Dirigible balloons and airships during the war
Engineering Index Backfile | 1920
|Notes on the existing types of dirigible balloons
Engineering Index Backfile | 1909
|