Polikarpov I-180
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Nikolai Polikarpov
Polikarpov
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Polikarpov Po-2
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Hero of Socialist Labour
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Oryol
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Valery Chkalov
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Sergey Ilyushin
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List of aerospace engineers
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Butyrka prison
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List of Russian people
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1892
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1944
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Nikolai Nikolayevich Polikarpov
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