 |
| |||
| Verschmutzung der Umwelt; Kontamination der Umwelt | |||
| contamination of the environment: 6 phrases in 3 subjects |
| General | 2 |
| Natural resourses and wildlife conservation | 1 |
| Nuclear physics | 3 |
|
| |||
| Verschmutzung der Umwelt; Kontamination der Umwelt | |||
| contamination of the environment: 6 phrases in 3 subjects |
| General | 2 |
| Natural resourses and wildlife conservation | 1 |
| Nuclear physics | 3 |