Bartel BM 4
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The Bartel BM.4 was a Polish biplane primary trainer aircraft used from 1929 to 1939 by the Polish Air Force and Polish civilian aviation, manufactured in the Samolot factory in Poznań. It was the fir
BM.4 on exhibition at Poznan, 1929
Bartel BM 2
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The Bartel BM 2, originally Bartel M.2 was a Polish biplane primary trainer aircraft prototype of 1926.
