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| trasmissione automatica dei segnali | |||
| trasmissione automatica di segnali | |||
| автоматическая сигнализация: 5 phrases in 5 subjects |
| Firefighting and fire-control systems | 1 |
| General | 1 |
| Military | 1 |
| Radio | 1 |
| Telephony | 1 |
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