 |
| |||
| official secrets protection (Alexander Demidov) | |||
| защита государственной тайны: 8 phrases in 3 subjects |
| Computer networks | 1 |
| General | 6 |
| Security systems | 1 |
|
| |||
| official secrets protection (Alexander Demidov) | |||
| защита государственной тайны: 8 phrases in 3 subjects |
| Computer networks | 1 |
| General | 6 |
| Security systems | 1 |