 |
| |||
| three-tier system; three-tiered system (A.Rezvov) | |||
| three-level system | |||
| трёхуровневая система: 9 phrases in 6 subjects |
| Aviation medicine | 1 |
| Economy | 1 |
| Education | 1 |
| Makarov | 4 |
| Mass media | 1 |
| Military | 1 |
|
| |||
| three-tier system; three-tiered system (A.Rezvov) | |||
| three-level system | |||
| трёхуровневая система: 9 phrases in 6 subjects |
| Aviation medicine | 1 |
| Economy | 1 |
| Education | 1 |
| Makarov | 4 |
| Mass media | 1 |
| Military | 1 |