Oswald Boelcke: Germany's First Fighter Ace and Father of Air CombatAudiolibroOswald Boelcke: Germany's First Fighter Ace and Father of Air CombatdeBGen R. G. HeadCalificación: 4 de 5 estrellas4/5Guardar Oswald Boelcke: Germany's First Fighter Ace and Father of Air Combat para después