 |
| |||
| Phasenmodulation f | |||
|
modulation de phase : 68 phrases in 10 subjects |
| Automated equipment | 1 |
| Communications | 9 |
| Computers | 2 |
| Electronics | 41 |
| Information technology | 10 |
| Natural resourses and wildlife conservation | 1 |
| Radio | 1 |
| Technology | 1 |
| Telegraphy | 1 |
| Transport | 1 |