Helicopters (EDUCATIEF) Helicopters and Autogiros; A History of Rotating-wing and V/STOL Aviation Helicopter or anything a horse can do Military Helicopter Handbook 2001; The international guide to the Military Helicopter industry VTOL Aircraft and Helicopters Military Helicopter Handbook 2000; The international guide to the Military Helicopter industry helicopters World's Helicopters Modern Military Helicopters illustrated history of Helicopters Jane's pocket book 20; Helicopters Jolly Green Giants; US Combat Helicopters
