 |
| |||
| Schmutzbeiwert m (sewage treatment); Schmutzindex m (sewage treatment); Schmutzwert m (sewage treatment) | |||
| pollution index: 3 phrases in 2 subjects |
| Environment | 2 |
| Statistics | 1 |
|
| |||
| Schmutzbeiwert m (sewage treatment); Schmutzindex m (sewage treatment); Schmutzwert m (sewage treatment) | |||
| pollution index: 3 phrases in 2 subjects |
| Environment | 2 |
| Statistics | 1 |