A Photographic Periodogram of the Sun-Spot Numbers

TitleA Photographic Periodogram of the Sun-Spot Numbers
Publication TypeJournal Article
Year of Publication1914
AuthorsDouglass, AE
JournalThe Astrophysical Journal,
VolumeXL
IssueNo. 3
KeywordsDouglass, numbers, periodogram, photo, photographic, spot, sun, sun spot

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