 |
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| international telephone and telegraph communications systems | |||
| системы международной телефонной и телеграфной связи: 5 phrases in 3 subjects |
| Computer networks | 1 |
| General | 1 |
| Technology | 3 |
|
| |||
| international telephone and telegraph communications systems | |||
| системы международной телефонной и телеграфной связи: 5 phrases in 3 subjects |
| Computer networks | 1 |
| General | 1 |
| Technology | 3 |