Geomagnetic data 1968 indices K and Ci
Sabben, D. Van
Geomagnetic data 1968 indices K and Ci D. Van Sabben and M. Siebert - Paris International Union of Geodesy and Geophysics 1970 - viii+102p. - International Association of Geomagnetism and Aeronomy; No. 12w1 .
Iaga Bulletin No.12w1Aga Bulletin-dataIaga IndicesIugg
550.38 / IAGA
Geomagnetic data 1968 indices K and Ci D. Van Sabben and M. Siebert - Paris International Union of Geodesy and Geophysics 1970 - viii+102p. - International Association of Geomagnetism and Aeronomy; No. 12w1 .
Iaga Bulletin No.12w1Aga Bulletin-dataIaga IndicesIugg
550.38 / IAGA