Copying pencil (English Wikipedia)

Analysis of information sources in references of the Wikipedia article "Copying pencil" in English language version.

refsWebsite
Global rank English rank
3rd place
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low place
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3,123rd place
8,586th place
2nd place
2nd place

20th.su

books.google.com

  • "Pharmaceutical journal; A weekly record of pharmacy and allied sciences, Volume 17". 1858. Retrieved 2017-11-15.
  • Owen 2008, pp. 40–42. Owen, David (2008), Copies in Seconds: How a Lone Inventor and an Unknown Company Created the Biggest Communication Breakthrough Since Gutenberg--Chester Carlson and the Birth of the Xerox Machine, Simon & Schuster, pp. 40–42, ISBN 978-1-4165-9832-9, retrieved 28 September 2013

conservation-us.org

cool.conservation-us.org

doi.org

nih.gov

ncbi.nlm.nih.gov

pubmed.ncbi.nlm.nih.gov

senato.it