黑便士 (Chinese Wikipedia)

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

refsWebsite

Global rank Chinese rank

5web.archive.org

1^st place

1^st place

1davidfeldman.com

low place

low place

low place

low place

1imagesoftheworld.org

low place

low place

1firstissues.org

low place

low place

1postalheritage.org.uk

low place

low place

davidfeldman.com

documents.davidfeldman.com

Feldman, David. The First Cover: May 1, 1840 (PDF). Geneva: David Feldman. 1999-02-17: 1–17 [2012-08-10]. （原始内容 (PDF)存档于2014-02-10）.

firstissues.org

Great Britain: Wednesday, May 6, 1840. First Issues Collectors Club. 3 November 2003 [28 June 2008]. （原始内容存档于2016-10-18）.

imagesoftheworld.org

Taylor, R.A. Wyon City Medal – 1837. Images of the World. [28 June 2008]. （原始内容存档于2008-05-09）.

norbyhus.dk

Lawrence, Ken. Before the Penny Black. Ken Lawrence. 2000 [28 June 2008]. （原始内容存档于2018-07-25）.

postalheritage.org.uk

Treasures of the Archive. The British Postal Museum and Archive. [7 November 2010]. （原始内容存档于2011-05-18）.

web.archive.org

Feldman, David. The First Cover: May 1, 1840 (PDF). Geneva: David Feldman. 1999-02-17: 1–17 [2012-08-10]. （原始内容 (PDF)存档于2014-02-10）.
Lawrence, Ken. Before the Penny Black. Ken Lawrence. 2000 [28 June 2008]. （原始内容存档于2018-07-25）.
Taylor, R.A. Wyon City Medal – 1837. Images of the World. [28 June 2008]. （原始内容存档于2008-05-09）.
Great Britain: Wednesday, May 6, 1840. First Issues Collectors Club. 3 November 2003 [28 June 2008]. （原始内容存档于2016-10-18）.
Treasures of the Archive. The British Postal Museum and Archive. [7 November 2010]. （原始内容存档于2011-05-18）.