 |
| |||
| composition de l'eau | |||
| состав воды: 6 phrases in 5 subjects |
| Chemistry | 2 |
| Construction | 1 |
| Geology | 1 |
| Natural resourses and wildlife conservation | 1 |
| Oil and gas technology | 1 |
|
| |||
| composition de l'eau | |||
| состав воды: 6 phrases in 5 subjects |
| Chemistry | 2 |
| Construction | 1 |
| Geology | 1 |
| Natural resourses and wildlife conservation | 1 |
| Oil and gas technology | 1 |