John Billingsley (Czech Wikipedia)

Analysis of information sources in references of the Wikipedia article "John Billingsley" in Czech language version.

refsWebsite

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1web.archive.org

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web.archive.org

Archivovaná kopie [online]. Johnbillingsley.net [cit. 2011-06-30]. Dostupné v archivu pořízeném dne 2011-07-09. (anglicky)