Jane's pocket book 20; Helicopters Fairey Aircraft since 1915 Warplanes of the world 1918-1939 Jane's pocket book 13; RPV's: Robot aircraft today Fantastic flying machines Combat aircraft of the world : the first complete, authortative, fully-illustrated guide ot combat aircraft Jet fighters Jetbombers Helicopters Jane's pocket book 15 record-breaking aircraft U.S. Warplanes Light Plane recognition