Wat is dat voor een vliegtuig?; Uitgave 1961 VTOL Aircraft and Helicopters Flying Guns World War I: development of aircraft guns, ammunition and installations 1914-1932 World guide to combat planes two Flying guns: the modern era development of aircraft guns, ammunition and installations since 1945 Flying guns the development of aircraft guns, ammunition and installations 1933-1945 Air Forces of the World; Their History, Development and Present Strength Jane's pocket book 13; RPV's: Robot aircraft today Command decision : an exciting novel about the 8th American Air Force in England in World War II complete book of Fighters : an illustrated encyclopedia of every fighter aircraft built and flown Fighter Aircraft of the World Jet Aircraft of the World