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31 Aug 1920 Jahr - Radio
Beschreibung:
Listening device that broadcasted educational programs in the classroom.
Zugefügt zum Band der Zeit:
Edu 141 History of Technology Timeline
By
Kiana Harris
4 Dez 2017
0
0
413
Datum:
31 Aug 1920 Jahr
Jetzt
~ 105 years ago
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