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File:EB1911 Xanthone - Pyronine.jpg

EB1911_Xanthone_-_Pyronine.jpg ‎(514 × 119 pixels, file size: 27 KB, MIME type: image/jpeg)

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Description
English: Chemical diagram of pyronine.
Date published 1911
Source “Xanthone,” Encyclopædia Britannica (11th ed.), v. 28, 1911, p. 881.
Author Unknown artistUnknown artist
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Public domain This image comes from the 13th edition of the Encyclopædia Britannica or earlier. The copyrights for that book have expired in the United States because the book was first published in the US with the publication occurring before January 1, 1929. As such, this image is in the public domain in the United States.

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Date/TimeThumbnailDimensionsUserComment
current21:26, 9 May 2021Thumbnail for version as of 21:26, 9 May 2021514 × 119 (27 KB)Library Guy{{Information |Description={{en|Chemical diagram of pyronine.}} |Source=“Xanthone,” ''Encyclopædia Britannica'' (11th ed.), v. 28, 1911, p. 881. |Date={{Date context|published|1911}} |Author={{unknown|artist}} |Permission={{PD-Britannica}} }} Category:Xanthenes Category:Chemistry diagrams from the 1911 Encyclopædia Britannica

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