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| добавочный номер (Andrey Truhachev) | |||
| код предварительного набора (Андатра); префиксный номер (oleg.vigodsky) | |||
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prefix number : 12 phrases in 8 subjects |
| Electronics | 1 |
| General | 2 |
| Mass media | 1 |
| Mathematics | 1 |
| Programming | 2 |
| Technology | 1 |
| Telecommunications | 2 |
| Telephony | 2 |