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美国政府科技报告
>Metallurgical Investigation of Carriage Components from a Soviet 122MM Howitzer Model 1938, Fmar 968; Top and Bottom Carriage, Trail, Spade, Wheel and Brake Drum
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Metallurgical Investigation of Carriage Components from a Soviet 122MM Howitzer Model 1938, Fmar 968; Top and Bottom Carriage, Trail, Spade, Wheel and Brake Drum