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پنی سیاه (Persian Wikipedia)

Analysis of information sources in references of the Wikipedia article "پنی سیاه" in Persian language version.

refsWebsite
Global rank Persian rank
1norbyhus.dk
low place
low place

norbyhus.dk

  • Lawrence, Ken (1 January 1996). "Before the Penny Black (First Series)". Toke Nørby. Retrieved 30 April 2013.