Unsichtbare Brücken
Unsichtbare Brücken
Nézze meg a Unsichtbare Brücken Teljes Film Magyarul. 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.
- Műfaj: Dokumentum
- Ország: Germany
- Rendező: Hans Fritz Wilhelm
- Öntvény: Rolf Gert, Alfred Stratmann,
