 |
| |||
| public address system (andrew_egroups); system for loud-speaking warning (Konstantin 1966) | |||
| система громкоговорящего оповещения: 16 phrases in 7 subjects |
| Aviation | 1 |
| Gas processing plants | 8 |
| General | 2 |
| Oil / petroleum | 1 |
| Security systems | 2 |
| Technology | 1 |
| Weapons of mass destruction | 1 |