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1940s United States experimental aircraft
|
133386 |
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Intermeshing-rotor helicopter (Synchropter)
|
133387 |
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Single-engined piston helicopters
|
133388 |
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Montgolfier fivérek
|
97032 |
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Space policy
|
133432 |
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Life in space
|
133433 |
| |
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Schlieren photography
|
133479 |
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Pulsejet engines
|
133439 |
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Pulsejet-powered aircraft
|
133446 |
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A Montgolfier-testvérek első nyilvános léggömbkísérlete
|
97035 |