 |
| |||
| feinkörniger Stoff | |||
| fine sizes: 4 phrases in 3 subjects |
| Mining | 1 |
| Natural resourses and wildlife conservation | 2 |
| Optics branch of physics | 1 |
|
| |||
| feinkörniger Stoff | |||
| fine sizes: 4 phrases in 3 subjects |
| Mining | 1 |
| Natural resourses and wildlife conservation | 2 |
| Optics branch of physics | 1 |