 |
| |||
| метод наблюдений (ssn) | |||
| метод наблюдения | |||
| observation method: 22 phrases in 14 subjects |
| Astronautics | 1 |
| Construction | 1 |
| Economy | 2 |
| Electronics | 1 |
| General | 1 |
| Mathematics | 1 |
| Metallurgy | 4 |
| Military | 1 |
| Natural resourses and wildlife conservation | 1 |
| Nautical | 2 |
| Navigation | 3 |
| Scientific | 1 |
| Sociology | 2 |
| Technology | 1 |