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[[image]] JAPANESE MILITARY AIRWAYS AND THE OPERATING RADIUS OF THE JAPANESE AIR FORCE. PREPARED UNDER DIRECTION OF BRIG. GENERAL WM. MITCHELL [[3 Columned Table]] : DATE : INFORMATION DIV. : NUMBER : : AUG.1924 : AIR SERVICE : 247-3-2 : BOUNDRY OF DECISIVE AREA UNDER DIRECT CONTROL OF HEAVIER THAN AIR CRAFT