| |
|
Librascope
|
131204 |
| |
|
Spanish engineers
|
131206 |
| |
|
Airships of France
|
131212 |
| |
|
Astra-Torres airship
|
131213 |
| |
|
Tourist attractions in Niagara Falls, Ontario
|
131216 |
| |
|
Niagara-vízesés - Niagara Falls
|
131217 |
| |
|
17th-century inventions
|
131266 |
| |
|
1960s in military history
|
131229 |
| |
|
1964
|
131230 |
| |
|
Kerrison Predictor
|
131241 |