The National Geographic Magazine, Volume 82National Geographic Society, 1942 - Geography Indexes kept up to date with supplements. |
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Page 664
Radio's Miracle Carries His Voice to All the World , in Many Tongues When President Roosevelt speaks , he can be heard wherever there is a short - wave radio receiver ( page 682 ) . While he is talking , his words are read in ...
Radio's Miracle Carries His Voice to All the World , in Many Tongues When President Roosevelt speaks , he can be heard wherever there is a short - wave radio receiver ( page 682 ) . While he is talking , his words are read in ...
Page 668
... radio to the enemy . Today these electron sentries are being installed all along our coasts . When peace comes the radio locator will have new uses in revealing icebergs endanger- ing ships in fog or darkness and for warning planes of ...
... radio to the enemy . Today these electron sentries are being installed all along our coasts . When peace comes the radio locator will have new uses in revealing icebergs endanger- ing ships in fog or darkness and for warning planes of ...
Page 689
... Radio Science Radio dots and dashes , " beep , beep- ing " shrilly across thousands of miles of ocean , have revolution- ized naval war . From Washington the Navy Department today can send messages direct to its ships anywhere . Three ...
... Radio Science Radio dots and dashes , " beep , beep- ing " shrilly across thousands of miles of ocean , have revolution- ized naval war . From Washington the Navy Department today can send messages direct to its ships anywhere . Three ...
Contents
The Bluegrass State Celebrates Its Sesquicentennial | 57 |
A National Geographic Staff Writer Gives a Vivid Description | 123 |
Allout Defense and Belt Tightening of Pacific Outpost Fore | 541 |
Copyright | |
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