 |
|
keep level : 27 phrases in 14 subjects |
| Astronautics | 1 |
| Construction | 1 |
| Economics | 1 |
| Game theory | 1 |
| General | 1 |
| Logistics | 1 |
| Makarov | 11 |
| Mass media | 2 |
| Non-destructive testing | 1 |
| Programming | 2 |
| Rail transport | 1 |
| Space | 1 |
| Technology | 2 |
| Weapons of mass destruction | 1 |