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A 2-ION MODEL OF ELECTRON-ION RECOMBINATION IN D-REGION
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MASS SPECTROMETRIC MEASUREMENTS OF POSITIVE IONS AT ALTITUDES FROM 64 TO 112 KILOMETERS
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PIGGOTT RW, 1965, PHIL T R SOC A, V257, P243
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INTERPRETATION OF PRE-SUNRISE ELECTRON DENSITIES AND NEGATIVE IONS IN D-REGION
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