 |
| |||
| средний уровень помех | |||
| средний уровень шума | |||
| average noise level: 3 phrases in 3 subjects |
| Makarov | 1 |
| Measuring instruments | 1 |
| Natural resourses and wildlife conservation | 1 |
|
| |||
| средний уровень помех | |||
| средний уровень шума | |||
| average noise level: 3 phrases in 3 subjects |
| Makarov | 1 |
| Measuring instruments | 1 |
| Natural resourses and wildlife conservation | 1 |