Unsichtbare Brücken
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Sinopsis
In the broadcasting center of a radio station, visitors are informed in a kind of educational course about how "electric waves" are generated and how they are converted into sounds that can then be heard on the radio.
Ficha técnica
- Hans Fritz Wilhelm
- 18 de agosto de 1932
- Released
- Germany
- Commerz-Film AG (Berlin)
- 40 min
Dónde ver
No hay opciones de streaming conocidas (país: España).
