Unsichtbare Brücken
Unsichtbare Brücken
Voir unsichtbare brücken sur FrenchStream. 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.
- Genre: Documentaire
- Pays: Germany
- Réalisateur: Hans Fritz Wilhelm
- Jeter: Rolf Gert, Alfred Stratmann,
