Geomagnetic data
By: International Union of Geodesy and Geophysics, Association of Geomaspretism and Aeronomy
Series: IAGA bulletin -- no.12, 32, [etc.]
Publisher: IUGG Publications Office [etc.]
Published: 1946
Place of publication: Paris [etc.]
Language: eng
Subjects: Geomagnetism; Periodicals; Observations
Description: Includes also an issue, published in 1950, with title: Geomagnetic K-indices, International Polar Year, August 1932 to August 1933.
Notes: "Indices K and C, Rapid variations, Special intervals" Varies.