 |
| |||
| diffuse Verschmutzungsquelle; diffuse Quelle | |||
|
source diffuse de pollution : 6 phrases in 3 subjects |
| Environment | 3 |
| Geology | 1 |
| Natural resourses and wildlife conservation | 2 |
|
| |||
| diffuse Verschmutzungsquelle; diffuse Quelle | |||
|
source diffuse de pollution : 6 phrases in 3 subjects |
| Environment | 3 |
| Geology | 1 |
| Natural resourses and wildlife conservation | 2 |