 |
| |||
| sound pressure meter | |||
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измерение звукового давления : 7 phrases in 4 subjects |
| Metrology | 2 |
| Natural resourses and wildlife conservation | 2 |
| Nautical | 2 |
| Unit measures | 1 |
|
| |||
| sound pressure meter | |||
|
измерение звукового давления : 7 phrases in 4 subjects |
| Metrology | 2 |
| Natural resourses and wildlife conservation | 2 |
| Nautical | 2 |
| Unit measures | 1 |