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File:EB1911 - Planet - Plate II.jpg

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Summary

Description
English: Stellar spectra, Lowell observatory, c. 1910
Date
Source 1911 Encyclopædia Britannica (11th ed.), v. 21, "Planet" article, Plate I. & II. (after page 716) archive.org/details/encyclopaediabri21chisrich/page/n758 ff.
Author V. M. Slipher

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Note: This tag should not be used for sound recordings.PD-1923Public domain in the United States//commons.wikimedia.org/wiki/File:EB1911_-_Planet_-_Plate_II.jpg

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Stellar spectra, Lowell observatory, c. 1910

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1 January 1911Gregorian

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