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Rasmussen,John E
15
Turtle,John P
15
Klemetti,Wayne I
14
Pagliarulo,Robert P
10
Cooley,Robert L
4
McLain,Ralph J
3
Klemetti, Wayne I.
2
McLain,Ralph J.
2
Pagliarulo, Robert P.
2
Rasmussen, John E.
2
Rasmussen,John E.
2
Turtle, John P.
2
Turtle,John P.
2
Bickel, J. E.
1
Briggs, M.
1
Burke,Leonarda
1
Donohoe, James B.
1
Field,E C , Jr
1
Field,E. C.
1
Fletcher, L. A.
1
Fortnam,Bruce R
1
Fraser-Smith, A. C.
1
Gaines ,Edward E
1
Gifford, Ralph E.
1
Greifinger,C.
1
Gunton,Robert C
1
Heckscher, John L
1
Helliwell, Robert A.
1
Hepner, T.
1
Houery, Sibylle
1
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VERY LOW FREQUENCY
Radiofrequency Wave Propagation
26
GREENLAND
24
*IONOSPHERIC PROPAGATION
22
Atmospheric Physics
22
LOW FREQUENCY
22
PE62702F
16
MAGNETOMETERS
15
REFLECTIVITY
15
RIOMETERS
14
*POLAR REGIONS
11
WURADC46001604
10
POLAR REGIONS
9
Radio Communications
8
DIURNAL VARIATIONS
7
IONOSPHERIC DISTURBANCES
6
MEASUREMENT
6
PARAMETERS
6
PROPAGATION
6
*ELECTROMAGNETIC WAVE REFLECTIONS
5
*IONOSPHERIC DISTURBANCES
5
ATMOSPHERIC SOUNDING
5
HIGH RESOLUTION
5
IONOSONDES
5
IONOSPHERE
5
WURADC46001605
5
ARTIFICIAL SATELLITES
4
EXTREMELY LOW FREQUENCY
4
HIGH LATITUDES
4
IONOSPHERIC PROPAGATION
4
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