IATME Bulletin No. 12d, Geomagnetic K-indices, International Polar Year, August 1932 to August 1933 ...

• Main Author: IAGA
• Format: Report
• Language: English
• Published: IUGG 1950
• Subjects: Geoeffectivity; Magnetic Activity; Earth System Science; Geomagnetism; Geohazards; Earth system modelling and interactions; International Polar Year
• Online Access: https://dx.doi.org/10.25577/twhb-8m95; https://isgi.unistra.fr/doi/bulletin12d.php