 |
| |||
| development of environment; environmental enhancement; natural environment enhancement (Konstantin 1966) | |||
| environmental improvement | |||
| улучшение качества окружающей среды: 7 phrases in 3 subjects |
| Ecology | 5 |
| Energy industry | 1 |
| Water supply | 1 |
|
| |||
| development of environment; environmental enhancement; natural environment enhancement (Konstantin 1966) | |||
| environmental improvement | |||
| улучшение качества окружающей среды: 7 phrases in 3 subjects |
| Ecology | 5 |
| Energy industry | 1 |
| Water supply | 1 |