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零戦と九九艦爆の着艦フックの分析、計14ページ。製造は日本建鐵。 OPNAV-16-V No. T228, January 1945, technical air intelligence center report No. 28, metal-lurgical examination of Japanese aircraft landing hooks. Report No. 13-c(25), USSBS Index Section 6 https://t.co/lKRpW1s5GV

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