 |
|
D -4 : 91 phrases in 22 subjects |
| Agrochemistry | 3 |
| Astronautics | 3 |
| Aviation | 31 |
| Biochemistry | 1 |
| Biology | 1 |
| Caspian | 2 |
| Chemistry | 2 |
| Chess | 2 |
| Drilling | 1 |
| Ecology | 2 |
| General | 2 |
| Geophysics | 22 |
| Human resources | 1 |
| Ironical | 2 |
| Makarov | 3 |
| Mass media | 3 |
| Medical | 1 |
| Molikpaq | 1 |
| Nanotechnology | 3 |
| Space | 3 |
| Technology | 1 |
| United States | 1 |