"Ear" Detects Hum of Plane Ten Miles Away

Titolo: "Ear" Detects Hum of Plane Ten Miles Away
Oggetto: en Imagined technology & prototypes; en Anti-aircraft
Article Title and/or Image Caption: "Ear" Detects Hum of Plane Ten Miles Away
Lingua: eng
Copertura temporale: interwar period
Data di rilascio: 1925-07
pagine: 3
Diritti: Public Domain (Google digitized)
Sorgente: Google Books
Archived by: Alberto Bordignon