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*ELECTROMAGNETIC RADIATION
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*IONOSPHERIC DISTURBANCES
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ANTARCTIC REGIONS
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AURORAE
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Atmospheric Physics
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CONJUGATE COORDINATES
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DIURNAL VARIATIONS
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ELECTRONS
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Geomagnetism
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MAGNETOHYDRODYNAMIC WAVES
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Radiofrequency Wave Propagation
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SCIENTIFIC SATELLITES
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TRANSPORT PROPERTIES
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UPPER ATMOSPHERE
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