共 23 条
[21]
ANNUAL AND SEMIANNUAL VARIATIONS OF THERMOSPHERIC DENSITY
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JOURNAL OF ATMOSPHERIC AND TERRESTRIAL PHYSICS,
1972, 34 (06)
:1053-&
[23]
SOLAR-ACTIVITY AND LATITUDINAL CHARACTERISTICS OF SEASONAL, NONSEASONAL AND SEMI-ANNUAL VARIATIONS IN PEAK ELECTRON DENSITIES OF F2-LAYER AT NOON AND AT MIDNIGHT IN MIDDLE AND LOW LATITUDES
[J].
JOURNAL OF ATMOSPHERIC AND TERRESTRIAL PHYSICS,
1971, 33 (06)
:889-&