Army extension courses. Special text : Defense against chemical warfare / prep. under the direction of the Chief of the Chemical Warfare Service for use … Army extension courses. Special text : Dental administration / prep. under the dir. of the Surgeon General for use with the Extension Course of the … Army extension courses. Special text : Training management, medical department / prep. under the dir. of the Surgeon General for use with the Extension Course … Army extension courses. Special text : Veterinary sanitation / prep. under the dir. of the Surgeon General for use with the Extension Course of the … Army extension courses. Special text : Organization and employment of the veterinary service infantry and cavalry divisions / prep. under the dir. of the Surgeon … Army extension courses. Special text : Current procurement and distribution / prep. under the dir. of the Quartermaster General for use with the Extension Course … Army extension courses. Special text : Cavalry marches and camps / prep. under the dir. of the Chief of Cavalry for use with the Extension … Army extension courses. Special text : Field wire systems / prep. under the dir. of the Chief Signal Officer for use with the Extension Course … Army extension courses. Special text : Training management / prep. under the dir. of the Chief of Infantry for use with the Extension Course of … Army extension courses. Special text : Theory of flight, lighter-than-air / prep. under the dir. of the Chief of the Air Corps for use with … Army extension courses. Special text : Supply / prep. under the dir. of the Quartermaster General for use with the Army Extension Courses Army extension courses. Special text : Industrial mobilization : (procurement planning office of The Assistant Secretary of War) / prep. by the Planning Branch, Office …