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Hubschrauber
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Theoretical mathematical discussion of aerodynamics of rotary blade flying machines
Theoretical mathematical discussion of aerodynamics of rotary blade flying machines
Theoretical mathematical discussion of aerodynamics of rotary blade flying machines
Aerodynamics of Wilford gyroplane with special reference to maximum lift coefficients
Aerodynamics of Wilford gyroplane with special reference to maximum lift coefficients
Notes on problems and progress of gyroplanes