|−|[[File:Acoustic Devices 1987 USS Illusive Lowers an Acoustical Device During an Exercise Attribution.jpg|200px|thumb|left|A 1987 photo of The USS Illusive lowering an an acoustical device to look for old mines - Photo by The U.S. Navy.]] |+|
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Latest revision as of 18:06, 22 May 2013
Devices for amplifying or transmitting sound
Pages in category "Acoustic devices"
The following 2 pages are in this category, out of 2 total.