| www.aafc.adfc.gov.au | Australian Air Force Cadets - Air Force Roundels. |
| www.airforce.forces.gc.ca | The RCAF roundel page. |
| www.fotw.net/flags | One of the web-sites of the ring 'Flags Of The World' : flags, arms, symbols. |
| www.canmilair.com/roundel.html | In dedication to the present and former members of the Canadian Military Forces, a page with all the military symbols used by Canada.
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| www.worldflags101.com | Canadian Flags : A flag guide illustrating everything there is to know about the flags of the world including what a flag is, which flags are the most popular, as well as the significance of all the different flags of the world. |
| www.theaerodrome.com | Aircraft of World War I National Markings, 1912 - 1918 |
| en.wikipedia.org/wiki/Roundel | Wikipedia, the free encyclopaedia, has a Roundel page.
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