Helicopter experiment (Oszkár Asboth, 1928)
Helicopter experiment (Oszkár Asboth, 1928)
As a milestone in the history of aviation, Oszkár Asboth´s first helicopter made its first flight in 1928.
Lớp 1 – 12
Từ khoá
mozaLink
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As a milestone in the history of aviation, Oszkár Asboth´s first helicopter made its first flight in 1928.
Lớp 1 – 12
Từ khoá
mozaLink
/Weblink