 |
| |||
| cleaning step (Olga_Lari) | |||
| ступень очистки: 9 phrases in 4 subjects |
| Construction | 3 |
| Energy industry | 1 |
| Natural resourses and wildlife conservation | 4 |
| Physics | 1 |
|
| |||
| cleaning step (Olga_Lari) | |||
| ступень очистки: 9 phrases in 4 subjects |
| Construction | 3 |
| Energy industry | 1 |
| Natural resourses and wildlife conservation | 4 |
| Physics | 1 |