skos:altLabel | - U-2
- CSS-13
- Kukuruznik
- Po-2
- Po-2 Kukuruznik
- Po-2 plane
- Po-2/U-2 \"Mule\"
- Po-2s
- Polikarpov Po-2 Kukuruznik
- Polikarpov Po-2 Mule
- Polikarpov Po-2 \"Kukuruznik\"
- Polikarpov Po-2's
- Polikarpov U-2
- Polikarpov U-2 / Po-2
- Polikarpov U-2SP
- U-2 (Po-2)
- U-2 biplanes
- kukuruznik
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