File:RomanAbacusRecon.jpg

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	Date/Time	Thumbnail	Dimensions	User	Comment
current	10:47, 18 May 2005		300 × 239 (24 KB)	Luestling~commonswiki	Abacus Scanned and uploaded by Malcolm Farmer (English Wikipedia) '''Source:''' Article for "abacus", 9th edition Encyclopedia Britannica, volume 1 (1875) Category:History of mathematics

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