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vzdolžna | zapisovalna gostota
| zapisovalna gostota | |
| snd.rec. | densité d'enregistrement |
| vzdolžna: 24 phrases in 6 subjects |
| Electric motors | 15 |
| Electricity generation | 3 |
| General | 1 |
| Sound recording | 2 |
| Technology | 1 |
| Transport | 2 |