 |
15 kHz | audiofrekvens
| audiofrekvens | |
| commun. tech. | audiofrecuencia |
| 15: 29 phrases in 10 subjects |
| Communications | 3 |
| Electronics | 1 |
| Environment | 1 |
| Finances | 2 |
| General | 4 |
| Information technology | 2 |
| Medical | 1 |
| Metallurgy | 1 |
| Pharmacy and pharmacology | 1 |
| Statistics | 13 |