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AURORAE
Atmospheric Physics
2
HIGH FREQUENCY
2
NORWAY
2
Radiofrequency Wave Propagation
2
(*ATMOSPHERIC SOUNDING
1
(*IONOSPHERIC PROPAGATION
1
(*MAGNETOSPHERE
1
*IONOSPHERIC PROPAGATION
1
BACKSCATTERING)
1
BREMSSTRAHLUNG
1
CHARGED PARTICLES
1
COMMUNICATION AND RADIO SYSTEMS
1
COMPUTER PROGRAMS
1
DATA ACQUISITION
1
FLIGHT
1
GEOMAGNETISM
1
IONOSPHERIC DISTURBANCES
1
LONG RANGE(DISTANCE)
1
METEOROLOGICAL BALLOONS
1
POLAR REGIONS
1
POLAR REGIONS)
1
PULSE TRANSMITTERS
1
RADIO TRANSMISSION
1
RAY TRACING
1
Radio Communications
1
UNITED KINGDOM
1
X RAYS)
1
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