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Date: 2016-06-11 09:48:38Solar phenomena Astronomy Wolf number Maunder Minimum Sunspot Solar cycle Solar minimum Sun RGO | The Astrophysical Journal, 824:54 (17pp), 2016 June 10 doi:637X © 2016. The American Astronomical Society. All rights reserved.Add to Reading ListSource URL: cc.oulu.fiDownload Document from Source WebsiteFile Size: 1,62 MBShare Document on Facebook |