1089 (Chinese Wikipedia)

Analysis of information sources in references of the Wikipedia article "1089" in Chinese language version.

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maths.org

plus.maths.org

  • David Acheson. 1089 and all that. +plus magazine. 2004-09-01 [2011-08-30]. (原始内容存档于2011-10-18) (英语). 

web.archive.org

  • David Acheson. 1089 and all that. +plus magazine. 2004-09-01 [2011-08-30]. (原始内容存档于2011-10-18) (英语).