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Atmospheric physics
25
Energetic particles
25
Geomagnetic activities
25
Geomagnetism
25
Geophysics
25
Mesospheric temperature
25
Negatively charged
Polar mesosphere summer echoes
25
Radar systems
25
Significance levels
25
Solar energy
25
Strong enhancement
25
550
24
FOS Earth and related environmental sciences
1
ddc:550
1
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