John Holland (pen maker) (English Wikipedia)

Analysis of information sources in references of the Wikipedia article "John Holland (pen maker)" in English language version.

refsWebsite

Global rank English rank

low place

low place

1web.archive.org

1^st place

1^st place

1kamakurapen.com

low place

low place

1patents.google.com

1,182^nd place

725^th place

kamakurapen.com

"John Holland Iridium". Archived from the original on 2016-03-04. Retrieved 2016-03-12.

matthey.com

technology.matthey.com

L. B. Hunt. "A History of Iridium" (PDF): 37. {{cite journal}}: Cite journal requires |journal= (help)
L. B. Hunt. "A History of Iridium" (PDF): 37. {{cite journal}}: Cite journal requires |journal= (help)

patents.google.com

"Process of fusing and molding iridium".

web.archive.org

"John Holland Iridium". Archived from the original on 2016-03-04. Retrieved 2016-03-12.