 |
| |||
| air pollution control; air-pollution control | |||
| борьба с загрязнением воздушной среды: 14 phrases in 3 subjects |
| Ecology | 9 |
| Energy industry | 3 |
| Medical | 2 |
|
| |||
| air pollution control; air-pollution control | |||
| борьба с загрязнением воздушной среды: 14 phrases in 3 subjects |
| Ecology | 9 |
| Energy industry | 3 |
| Medical | 2 |