Air power : key to survival / by Alexander P. De Seversky army air forces aviation psychology program research reports Psychological research on operational training in the continental air forces / ed by Meredith P. Crawford ...[et al] history of united states naval operations in world war ii History of United States naval operations in World War II : The battle of the Atlantic, September 1939-May 1943 / Samuel Eliot Morison Tactics instruction memorandum : Tactical Aspects of Field Artillery Fire Direction Weapons (Marine Infantry Battalion) Gunnery instruction memorandum : Short Base Flash Ranging for Marine Field Artillery Gunnery instruction memorandum : Construction and Use of a Rapid Computer for Survey Traverses Materiel instruction memorandum : Sighting and laying equipment for field artillery materiel Materiel instruction memorandum : The Firing Battery 155mm Howitzer M1 Tactics instruction memorandum : Radio voice procedure for field artillery Logarithmic trigonometric and short-base tables Gunnery instruction memorandum : Use of Photomaps in Field Artillery Battalion Survey and Unobserved Fire