| |
|
Rail transport in the Russian Far East
|
131166 |
| |
|
Astronomical instrument
|
131174 |
| |
|
Arab inventions
|
131175 |
| |
|
Scanimate
|
131184 |
| |
|
Artillery operation
|
131189 |
| |
|
1960s in military history
|
131229 |
| |
|
Francis Warrington Gillet
|
94961 |
| |
|
Defunct computer companies of the United States
|
131199 |
| |
|
Librascope
|
131204 |
| |
|
Spanish inventors
|
131207 |