tactical employment of antiaircraft artillery in the independent division and corps (tentative) / Command and general staff school Prospectus of the course in aviation medicine for naval medical officers / U.S. naval school of aviation medicine & research, naval air station School of the citizen sailor / Louis H. Bolander, William G. Fletcher, Ralph H. Gabriel ; Second Army Board comparative study of world war casualties : from gas and other weapons / prep. by Harry L. Gilchrist Practical exercise : observer exercise no. 2 / The Artillery School, Air Training Department Antiaircraft defense (tentative)