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Polikarpov Po-2 Tham khảo|month=
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Polikarpov Po-2 Tham khảoLiên quan
Polikarpov Polikarpov I-153 Polikarpov I-15 Polikarpov I-16 Polikarpov Po-2 Polikarpov I-5 Polikarpov R-Z Polikarpov I-185 Polikarpov I-180 Polikarpov R-5Tài liệu tham khảo
WikiPedia: Polikarpov Po-2 http://www.pilotfriend.com/photo_albums/timeline/w... http://www.worldairforces.com/Countries/countriesi... http://www.youtube.com/watch?v=Q_WSSx74KEA http://www.youtube.com/watch?v=h1RWS6MyG70 http://vzlet-khai.narod.ru/ http://www.aeroflight.co.uk/waf/bulgaria/bulg-af-a... https://web.archive.org/web/20080122143236/http://... https://commons.wikimedia.org/wiki/Polikarpov_Po-2...