 |
| |||
| waste management | |||
| удаление и переработка отходов: 15 phrases in 6 subjects |
| Astronautics | 6 |
| Caspian | 2 |
| Ecology | 1 |
| Energy industry | 3 |
| Sociology | 1 |
| Technology | 2 |
|
| |||
| waste management | |||
| удаление и переработка отходов: 15 phrases in 6 subjects |
| Astronautics | 6 |
| Caspian | 2 |
| Ecology | 1 |
| Energy industry | 3 |
| Sociology | 1 |
| Technology | 2 |