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AURORAL RADIO-ECHO TABLE AND DIAGRAM FOR A STATION IN GEOMAGNETIC LATITUDE 56-DEGREES
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RADIO MEASUREMENTS AND AURORAL ELECTRON DENSITIES
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RADIO ECHOES OBSERVED DURING AURORAE AND GEOMAGNETIC STORMS USING 35 AND 74 MC/S WAVES SIMULTANEOUSLY
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ORIENTATIONS OF AURORAL DISPLAYS IN WEST-CENTRAL CANADA
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