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- 2 метод часткових відбиттів
- 1 D region of the ionosphere
- 1 electron collision frequency
- 1 natural sources of ionospheric di...
- 1 radio sounding of the lower ionos...
- 1 recording the amplitudes of refle...
- 1 the electron density
- 1 the middle latitude ionospheric D...
- 1 естественные источники ионосферны...
- 1 область D ионосферы
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