 |
| |||
| air quality | |||
| Ambient air quality; ambient air quality | |||
| Luftqualität: 16 phrases in 6 subjects |
| Environment | 11 |
| General | 1 |
| Natural resourses and wildlife conservation | 1 |
| Natural sciences | 1 |
| Politics | 1 |
| Research and development | 1 |
|
| |||
| air quality | |||
| Ambient air quality; ambient air quality | |||
| Luftqualität: 16 phrases in 6 subjects |
| Environment | 11 |
| General | 1 |
| Natural resourses and wildlife conservation | 1 |
| Natural sciences | 1 |
| Politics | 1 |
| Research and development | 1 |