Early aircraft armament : the aeroplane and the Gun up to 1918 British Aircraft Armament : volume 1 : RAF gun turrets from 1914 to the present day British Aircraft Armament : volume 2 : RAF guns and gunsights from 1914 to the present day Jane's aerospace dictionary Topgun : gevechtsvliegtuigen en Amerikaanse straalvliegtuigen Luchtvaart de eerste 100 jaar AH-64 Apache Helicopters 1900-1960 Gunslingers in Action Lock on no 13 Aircraft Photo File, Mi-24W Hind E Gunship illustrated guide to Military Helicopters illustrated guide to Spy Planes and Electronic Warfare Aircraft