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  • Magnetic apex coordinates a magnetic coordinate system for the ionospheric F2 layer
    Magnetic apex coordinates: a magnetic coordinate system for the ionospheric F2 layer
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  • Description and catalog of ionospheric Fregion data Jicamarca radar observatory November 1966April 1969
    Description and catalog of ionospheric F-region data, Jicamarca radar observatory (November 1966-April 1969)
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