・参考文献
https://en.wikipedia.org/wiki/COW_37_mm_gun
en.wikipedia.org
https://en.wikipedia.org/wiki/Airco_DH.4
en.wikipedia.org
https://en.wikipedia.org/wiki/Westland_Westbury
en.wikipedia.org
http://users.telenet.be/Emmanuel.Gustin/history/NoAllowance.html
users.telenet.be
A description of no allowance sighting and shooting.
www.dingeraviation.net
https://en.wikipedia.org/wiki/Bristol_Bagshot
en.wikipedia.org
https://www.baesystems.com/en/heritage/bristol-95-bagshot
www.baesystems.com
https://en.wikipedia.org/wiki/Westland_C.O.W._Gun_Fighter
en.wikipedia.org
https://en.wikipedia.org/wiki/Westland_Interceptor
en.wikipedia.org
https://en.wikipedia.org/wiki/Vickers_Type_161
en.wikipedia.org
https://en.wikipedia.org/wiki/Littlejohn_adaptor
en.wikipedia.org
https://www.quarryhs.co.uk/sgun.htm
www.quarryhs.co.uk
https://www.quarryhs.co.uk/sgun.jpg
https://www.quarryhs.co.uk/37-40mm.htm
www.quarryhs.co.uk
https://www.quarryhs.co.uk/cannon_pioneers.htm
www.quarryhs.co.uk
Index of /enc/fww1
www.airwar.ru
Tips!原文引用元：
https://warspot.ru/3066-sau-pod-znakom-y
warspot.ru
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