Chisanbop (English Wikipedia)

Analysis of information sources in references of the Wikipedia article "Chisanbop" in English language version.

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archive.org

  • Lieberthal, Edwin M (1979). The Complete Book of Fingermath: Simple, Accurate, Scientific. London : Souvenir Press. ISBN 0285624385.
  • Pai, Hang Young (1981). The Complete Book of Chisanbop: Original Finger Calculation Method Created by Sung Jin Pai and Hang Young Pai. Van Nostrand Reinhold. ISBN 0-442-27568-4.

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computerhistory.org

archive.computerhistory.org

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