. Pic of a 19th century painting. Public domain, from en wiki image . 19th century. unknown; cropped by Beyond My Ken (talk) 14:23, 27 January 2011 (UTC) 388 Nikolay Ivanovich Lobachevsky crop

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Size: 1955px × 2558px
Photo credit: © The Picture Art Collection / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: ., /., 14, 19th, century., cropped, ken, unknown