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Statistical study of the equatorial F2 layer critical frequency at Ouagadougou during solar cycles 20, 21 and 22, using Legrand and Simon���s classification of geomagnetic activity https://doi.org/10.1051/swsc/2012019
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Statistical study of the equatorial F2 layer critical frequency at Ouagadougou during solar cycles 20, 21 and 22, using Legrand and Simon���s classification of geomagnetic activity https://doi.org/10.1051/swsc/2012019
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