Mechanical Vibrations: Fourth Edition Airplane performance stability and control Mathematics and physics of aircraft and missile engineering Proceedings of the Second European Aeronautical Congress Technical aspects of air transport management Ballons dirigeables Dirigeables : etude complete de la direction des ballons des tentatives realisees et des projets nouveaux Long-range flight Text book of physics : heat, light and sound Dive Bombing Luchtvaartkundige bibliotheek : Onstabiele trillingen van vleugels 1 Luchtvaartkundige bibliotheek : Sterkteberekening van vliegtuigen 1