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| système d'intercommunication; système téléphonique à poussoirs; système à clé; intercom m | |||
| installation d'intercommunication | |||
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key system : 42 phrases in 12 subjects |
| Aviation | 2 |
| Communications | 10 |
| Finances | 1 |
| General | 3 |
| Information technology | 10 |
| Labor law | 1 |
| Microsoft | 1 |
| Name of organization | 3 |
| Technology | 1 |
| Telecommunications | 3 |
| Transport | 1 |
| United Nations | 6 |
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