 |
| |||
| halcyon days | |||
| благоприятный период: 9 phrases in 6 subjects |
| Astronautics | 4 |
| Geophysics | 1 |
| Hydrology | 1 |
| Medical | 1 |
| Oil and gas | 1 |
| Oil and gas technology | 1 |
|
| |||
| halcyon days | |||
| благоприятный период: 9 phrases in 6 subjects |
| Astronautics | 4 |
| Geophysics | 1 |
| Hydrology | 1 |
| Medical | 1 |
| Oil and gas | 1 |
| Oil and gas technology | 1 |