Sorry, this entry is only available in Français.

Sorry, this entry is only available in Français.
Sorry, this entry is only available in Français.
Sorry, this entry is only available in Français.
UFO-Science explains the interest of the acoustic detection for the study of the UFO phenomenon, through an experience on the sounds perceived by an observer equipped with a microphone, located near an aircraft in landing phase.
Sorry, this entry is only available in Français.
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