Tetraphobia (Simple English Wikipedia)

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

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archive.org

  • Havil, Julian (2007). Nonplussed: Mathematical Proof of Implausible Ideas (Hardcover). Princeton University Press. p. 153. ISBN 978-0691120560.

thearch.com.hk

visioncity.com.hk

web.archive.org