Geomagnetic indices K and C, 1956
Bartels, Julius
Geomagnetic indices K and C, 1956 Julius Bartels, A. Romana and J. Veldkamp - Amsterdam International Union of Geodesy and Geophysics 1959 - ix+157p. - International Association of Geomagnetism and Aeronomy; No. 12k .
Iaga Bulletin No.12kIaga Bulletin-dataIaga IndicesIugg
550.38 / IAGA
Geomagnetic indices K and C, 1956 Julius Bartels, A. Romana and J. Veldkamp - Amsterdam International Union of Geodesy and Geophysics 1959 - ix+157p. - International Association of Geomagnetism and Aeronomy; No. 12k .
Iaga Bulletin No.12kIaga Bulletin-dataIaga IndicesIugg
550.38 / IAGA