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Klemetti,Wayne I
3
Rasmussen,John E
3
Turtle,John P
3
Aarons, Jules
2
Andreasen, C. C.
2
Djuth, Frank T.
2
EGELAND,ALV
2
Elder, John H.
2
HULTQVIST,BENGT
2
Holland, Elizabeth A.
2
Jones, Tudor B.
2
Liszka,Ludwik
2
Mendillo, Michael
2
ORTNER,JOHANNES
2
Sears,Robert D.
2
Aarons,Jules
1
Akasofu,S. -I.
1
Allen, Richard S.
1
Allshouse, R
1
Barnes, R. J.
1
Baumgardner, Jeffrey
1
Bibl,Klaus
1
Buchau,Jurgen
1
Bust, Gary
1
Carpenter, D. L.
1
Carroll, K
1
Clauer, C. R.
1
Cooley,Robert L
1
Cormier, Raymond J
1
Coster, A. J.
1
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*IONOSPHERIC DISTURBANCES
Atmospheric Physics
39
GREENLAND
16
Radiofrequency Wave Propagation
14
POLAR REGIONS
13
AURORAE
10
IONOSPHERE
10
*IONOSPHERIC PROPAGATION
9
VERY LOW FREQUENCY
9
PLASMAS(PHYSICS)
8
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7
HIGH FREQUENCY
7
HIGH LATITUDES
7
PROPAGATION
7
F REGION
6
MAGNETIC STORMS
6
MAGNETOMETERS
6
PE62101F
6
RADIO WAVES
6
E REGION
5
ELECTRONS
5
Geomagnetism
5
INCOHERENT SCATTERING
5
IONOSPHERIC PROPAGATION
5
LATITUDE
5
LOW FREQUENCY
5
MAGNETIC FIELDS
5
PARTICLES
5
PE62702F
5
ALASKA
4
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Greenland
20
Thule
7
Alaska
6
Arctic
6
Kiruna
6
Tromso
5
EISCAT
4
Ice cap
3
Thule Air
3
Antarc*
2
Thule Air Base
2
Tromsoe
2
Antarctic
1
Antarctica
1
Cambridge Bay
1
Godhavn
1
Newfoundland
1
North Magnetic Pole
1
Qaanaaq
1
Resolute Bay
1
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1
South Atlantic Ocean
1
polar fox
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