Blériot-SPAD S.81 (English Wikipedia)

Analysis of information sources in references of the Wikipedia article "Blériot-SPAD S.81" in English language version.

refsWebsite

Global rank English rank

2aviafrance.com

low place

low place

aviafrance.com

Parmentier, Bruno (12 April 2003). "SPAD S-81". Aviafrance (in French). Paris. Retrieved 10 March 2018.
Parmentier, Bruno (4 October 2012). "SPAD S-81bis". Aviafrance (in French). Paris. Retrieved 10 March 2018.