 |
| |||
| direct-reading | |||
| direktanzeigend: 9 phrases in 4 subjects |
| Measuring instruments | 3 |
| Natural resourses and wildlife conservation | 1 |
| Optics branch of physics | 4 |
| Радиоактивное излучение | 1 |
|
| |||
| direct-reading | |||
| direktanzeigend: 9 phrases in 4 subjects |
| Measuring instruments | 3 |
| Natural resourses and wildlife conservation | 1 |
| Optics branch of physics | 4 |
| Радиоактивное излучение | 1 |