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message collection (ssn) |
сбор сообщений : 27 phrases in 11 subjects |
Astronautics | 2 |
Aviation | 3 |
Electronics | 3 |
General | 1 |
Information security and data protection | 2 |
Mass media | 4 |
Military | 4 |
Programming | 1 |
Security systems | 1 |
Telecommunications | 5 |
Telephony | 1 |