| |
|
Niagara-vízesés - Niagara Falls
|
131217 |
| |
|
Whirlpool Aero Car
|
131218 |
| |
|
Military history by year
|
131228 |
| |
|
1960s in military history
|
131229 |
| |
|
1964
|
131230 |
| |
|
Kerrison Predictor
|
131241 |
| |
|
Hellenistic engineering
|
131279 |
| |
|
Tide tables
|
131252 |
| |
|
Tide-predicting machine
|
131253 |
| |
|
Polish computer scientists
|
131257 |