Edmund Rumpler Konstrukteur und Erfinder History of Helicopters Aircraft recognition guide Helicopters of the world Helicopters of the world Helicopters of the world Air facts and feats : a record of aerospace achievement / comp. by Francis K. Mason and Martin C. Windrow ; with colour ill. by … Harnessing the genie : Science and Technology Forecasting for the Air Force 1944-1986 Helicopter : training manual and pilot guide U.S. Military combat aircrew individual survival equipment : WWII to Present Vliegtuigen Binnenstebuiten: 10 dwarsdoorsneden van fascinerende vliegtuigen Modern Air Power Helicopters
