Biblio

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Author Title Type [ Year(Asc)]
Filters: Author is Douglass, A.E. and Keyword is spot  [Clear All Filters]
1914
Douglass, AE. 1914. “A Photographic Periodogram Of The Sun-Spot Numbers”. The Astrophysical Journal, XL (No. 3). The Astrophysical Journal, .
PDF icon Douglass, AE_A Photographic Periodogram of the Sun-Spot Numbers_1914.pdf (7.69 MB)
1895
PDF icon Douglass, AE_A Cloud Like Spot on the Terminator of Mars_1895.pdf (172.04 KB)