 |
| |||
| hydrogen atom | |||
| Wasserstoffatom: 3 phrases in 3 subjects |
| Chemistry | 1 |
| Environment | 1 |
| Natural resourses and wildlife conservation | 1 |
|
| |||
| hydrogen atom | |||
| Wasserstoffatom: 3 phrases in 3 subjects |
| Chemistry | 1 |
| Environment | 1 |
| Natural resourses and wildlife conservation | 1 |