 |
| |||
| mancha luminosa | |||
| plamka: 13 phrases in 5 subjects |
| Lighting other than cinema | 1 |
| Radio | 5 |
| Telegraphy | 3 |
| Transport | 1 |
| Vacuum tubes | 3 |
|
| |||
| mancha luminosa | |||
| plamka: 13 phrases in 5 subjects |
| Lighting other than cinema | 1 |
| Radio | 5 |
| Telegraphy | 3 |
| Transport | 1 |
| Vacuum tubes | 3 |