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| global communications system: 31 phrases in 12 subjects |
| Astronautics | 6 |
| Communications | 2 |
| Computer networks | 2 |
| Computers | 1 |
| Electronics | 2 |
| General | 1 |
| Information technology | 4 |
| Mass media | 1 |
| Military | 7 |
| Rail transport | 2 |
| Technology | 1 |
| Telecommunications | 2 |
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