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Scientific American

May 17, 1919

1 min read

Listening for the Enemy

Sound-Ranging Devices Employed to Locate Hostile Guns, Planes and Submarines

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Scientific American Magazine Vol 120 Issue 20This article was originally published with the title “Listening for the Enemy” in Scientific American Magazine Vol. 120 No. 20 (), p. 510
doi:10.1038/scientificamerican05171919-510
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