 |
|
identification signals : 45 phrases in 15 subjects |
| Air defense | 4 |
| Aviation | 1 |
| Computer networks | 2 |
| Computers | 1 |
| Electronics | 3 |
| Household appliances | 1 |
| Information technology | 3 |
| Makarov | 1 |
| Mass media | 8 |
| Mathematics | 1 |
| Military | 4 |
| Space | 2 |
| Technology | 7 |
| Telecommunications | 2 |
| Television | 5 |