File:Checker counting board.jpg

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Summary

Description
English: checker counting board in a 18th century Japanese mathematics book
中文（简体）：18 世纪日本格子筹算版
Date 18th century
date QS:P,+1750-00-00T00:00:00Z/7
Source mybook
Author AnonymousUnknown author
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checksum

9ec1cc6c4e1ee851b541e9263aa2dec414f94cae

determination method: SHA-1

data size

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width

1,559 pixel

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Date/TimeThumbnailDimensionsUserComment
current10:49, 25 July 2011Thumbnail for version as of 10:49, 25 July 20111,559 × 1,580 (974 KB)Gisling
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