A hundred year series of geomagnetic data, 1868-1967
Subtitle: indices aa: storm sudden commencements.
Series: I.A.G.A. Bulletin, no. 33
Publisher: I.U.G.G. Publications Office, printed by Krips' Reprint, Meppel
Published: 1973
Place of publication: Paris
Language: eng
Number of pages: 224
Subjects: Magnetism, Terrestrial -- Tables