PH helmet (English Wikipedia)

Analysis of information sources in references of the Wikipedia article "PH helmet" in English language version.

refsWebsite

Global rank English rank

3web.archive.org

1^st place

1^st place

1westernfrontassociation.com

low place

low place

low place

low place

489^th place

377^th place

249^th place

169^th place

army.mil

eustis.army.mil

"History of the U.S. Army's protective mask" (PDF). Archived from the original (PDF) on 20 July 2006. Retrieved 17 October 2011.

brinkster.com

www33.brinkster.com

CWS Barker (1926). "Gas mask development". Chemical Warfare. 12 (7): 11–15. Archived from the original on 2 May 2007. Retrieved 8 May 2006.

gutenberg.org

The Riddle of the Rhine: Chemical Strategy in Peace and War, Victor LeFebure, at Project Gutenberg

web.archive.org

"Apparatus Of Gas Warfare". The Western Front Association. Archived from the original on 27 July 2009. Retrieved 17 October 2011.
CWS Barker (1926). "Gas mask development". Chemical Warfare. 12 (7): 11–15. Archived from the original on 2 May 2007. Retrieved 8 May 2006.
"History of the U.S. Army's protective mask" (PDF). Archived from the original (PDF) on 20 July 2006. Retrieved 17 October 2011.

westernfrontassociation.com

"Apparatus Of Gas Warfare". The Western Front Association. Archived from the original on 27 July 2009. Retrieved 17 October 2011.