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RT @USGS_Pubs: Adjusted geomagnetic data—Theoretical basis and validation, https://t.co/4shHosoKnv https://t.co/1M7NcQZ1vY
RT @USGS_Pubs: Adjusted geomagnetic data—Theoretical basis and validation, https://t.co/4shHosoKnv https://t.co/1M7NcQZ1vY
Adjusted geomagnetic data—Theoretical basis and validation, https://t.co/4shHosoKnv https://t.co/1M7NcQZ1vY