Oerlikon KBA - Wikipedia
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Canon de casemate 37mm Modèle 1934 - Tank Encyclopedia
Panzer II, Forgotten Hope 2 Wiki
Type 11 37 mm Infantry Gun: Infantry Support Gun, Machine Gun, Light Tank, Type 94 37 mm Anti- Tank Gun, Canon d'Infanterie de 37 modèle 1916 TRP, Breechblock : Surhone, Lambert M.
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Cañón de Infantería de 37 mm modelo 1916 TRP - Wikipedia, la enciclopedia libre