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Koolhoven F.K.49 Biến thểThực đơn
Koolhoven F.K.49 Biến thểLiên quan
Koolhoven F.K.58 Koolhoven F.K.56 Koolhoven F.K.52 Koolhoven F.K.49 Koolhoven F.K.51 Koolhoven F.K.55Tài liệu tham khảo
WikiPedia: Koolhoven F.K.49 http://www.koolhoven.com/history/airplanes/koolhov... http://www.alexdenouden.nl/artikelen/koolhoven06.h... http://www.airwar.ru/enc/spyww2/fk49.html