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| alta frecuencia | |||
| ondas cortas; ondas decamétricas | |||
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υψηλή συχνότητα : 13 phrases in 6 subjects |
| Agriculture | 1 |
| Chemistry | 1 |
| Communications | 6 |
| Electronics | 2 |
| Industry | 2 |
| Technology | 1 |
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