 |
| |||
| Tonverfahren n | |||
| метод звукопередачи: 12 phrases in 3 subjects |
| Cinema equipment | 8 |
| Photographical sound recording | 3 |
| Sound recording | 1 |
|
| |||
| Tonverfahren n | |||
| метод звукопередачи: 12 phrases in 3 subjects |
| Cinema equipment | 8 |
| Photographical sound recording | 3 |
| Sound recording | 1 |