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| recording paper | |||
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papier d'enregistrement : 7 phrases in 6 subjects |
| Acoustics | 1 |
| Automated equipment | 1 |
| General | 1 |
| Information technology | 2 |
| Patents | 1 |
| Physics | 1 |
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| |||
| recording paper | |||
|
papier d'enregistrement : 7 phrases in 6 subjects |
| Acoustics | 1 |
| Automated equipment | 1 |
| General | 1 |
| Information technology | 2 |
| Patents | 1 |
| Physics | 1 |