約翰·梅欽 (Chinese Wikipedia)

Analysis of information sources in references of the Wikipedia article "約翰·梅欽" in Chinese language version.

refsWebsite

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2web.archive.org

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doi.org

Anita McConnell, ‘Machin, John (bap. 1686?, died 1751)’, Oxford Dictionary of National Biography, Oxford University Press, 2004. Accessed 26 June 2007. doi:10.1093/ref:odnb/17533

web.archive.org

List of Subscribers to the Cyclopaedia （页面存档备份，存于互联网档案馆） at library.wisc.edu
Weisstein, Eric W. (编). Machin's Formula. at MathWorld--A Wolfram Web Resource. Wolfram Research, Inc. [2021-10-31]. （原始内容存档于2019-07-11）（英语）.

wisc.edu

digicoll.library.wisc.edu

List of Subscribers to the Cyclopaedia （页面存档备份，存于互联网档案馆） at library.wisc.edu

wolfram.com

mathworld.wolfram.com

Weisstein, Eric W. (编). Machin's Formula. at MathWorld--A Wolfram Web Resource. Wolfram Research, Inc. [2021-10-31]. （原始内容存档于2019-07-11）（英语）.