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Garner, W. E.
2
LISZKA,LUDWIK
2
Rhoads, F. J.
2
Schauer, R. L.
2
Aarons,Jules
1
Allred,Glenn D.
1
BATES,HOWARD F.
1
Barr, R.
1
Bibl,Klaus
1
Buchau,J.
1
Burt,David A.
1
Coroniti, S. C.
1
Egeland ,Alv
1
Egeland,Alv
1
GAGNON,M.K.
1
Greenwald, Raymond A
1
Gustafsson,Georg
1
Herman, J. R.
1
Hill, G. E.
1
Hultguist,Bengt
1
Jones, T. B.
1
Kersley,L
1
Kopka, H.
1
Larsen,Trygve Roed
1
Liszka,Ludwil
1
Livingston,Robert C
1
MARSH, H.S.
1
Maul, A.
1
Mileski, Paul
1
Olsen ,Sven
1
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*RADIO WAVES
IONOSPHERE
10
Radiofrequency Wave Propagation
10
Atmospheric Physics
9
IONOSPHERIC PROPAGATION
8
MEASUREMENT
8
HIGH FREQUENCY
6
POLAR REGIONS
6
*RADIO TRANSMISSION
5
NORWAY
5
PROPAGATION
5
VERY LOW FREQUENCY
5
*IONOSPHERE
4
ABSORPTION
4
ATTENUATION
4
HIGH LATITUDES
4
*AURORAE
3
*PROPAGATION
3
*RADIO SIGNALS
3
ARCTIC REGIONS
3
Active & Passive Radar Detection & Equipment
3
ELECTRON DENSITY
3
EXTREMELY LOW FREQUENCY
3
GEOMAGNETISM
3
GEOPHYSICS
3
MAGNETOSPHERE
3
Radio Communications
3
THEORY
3
VERY HIGH FREQUENCY
3
WAVE PROPAGATION
3
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