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Liszka,Ludwik
11
Egeland,Alv
5
Gustafsson,Georg
5
Dyring,E.
4
EGELAND,ALV
4
Ekstrom,L.
4
HULTQVIST,BENGT
4
Lindgren,S.
3
ORTNER,JOHANNES
3
Sandstrom,A. E.
3
Aarons, Jules
2
Dyring,Eric
2
Eckermann, S. D.
2
Egeland ,Alv
2
LISZKA,LUDWIK
2
Larfors,Ove
2
Lindgren,Stig
2
Mendillo, Michael
2
Olsen ,Sven
2
Ortner,Johannes
2
Rees,David
2
Riedler,Willi
2
Sandstrom,Arne E.
2
Sporre,B.
2
Sporre,Bert
2
Westerlund,Svante
2
Aruliah,Anasuya L
1
Barnes, R. J.
1
Barron,William
1
Camy-Peyret, C.
1
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SWEDEN
24
Atmospheric Physics
18
DIURNAL VARIATIONS
13
GEOMAGNETISM
10
*AURORAE
9
MEASUREMENT
9
PERIODIC VARIATIONS
9
RADIO WAVES
9
AURORAE
8
GEOPHYSICS
8
IONOSPHERE
8
TABLES(DATA)
7
*IONOSPHERIC DISTURBANCES
6
ARTIFICIAL SATELLITES
6
INTENSITY
6
MAGNETIC STORMS
6
Radiofrequency Wave Propagation
6
ABSORPTION
5
FOREIGN REPORTS
5
POLAR REGIONS
5
VERY LOW FREQUENCY
5
(*COSMIC RAYS
4
*ARTIFICIAL SATELLITES
4
*RADIO WAVES
4
COSMIC RAY TELESCOPES
4
HIGH FREQUENCY
4
IONOSPHERIC PROPAGATION
4
MAGNETIC FIELDS
4
MAGNETOOPTICS
4
NORWAY
4
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