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Detailed Reference Information
Brunner 1928
Brunner, W. (1928). Relative sunspot-numbers for the central zone of the sun's disc for the 11-year period 1917 to 1927. Terrestrial Magnetism and Atmospheric Electricity 33: doi: 10.1029/TE033i004p00223. issn: 0096-8013.
Journal
Terrestrial Magnetism and Atmospheric Electricity
Publisher
American Geophysical Union
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