THE EARS OF THE AIR FORCE.—Aerial defence exercises practised for the first time at Osaka, in Japan. Inspecting the giant audiphones used in the manoeuvres. These detect sounds of approaching aircraft.
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Bibliographic details
Sun (Auckland), Volume II, Issue 457, 12 September 1928, Page 16
Word Count
31THE EARS OF THE AIR FORCE.—Aerial defence exercises practised for the first time at Osaka, in Japan. Inspecting the giant audiphones used in the manoeuvres. These detect sounds of approaching aircraft. Sun (Auckland), Volume II, Issue 457, 12 September 1928, Page 16
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