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The Sikorsky S-39 was a smaller, single-engine version of the S-38 light amphibious aircraft, built in the USA by aviation firm Sikorsky Aircraft during the early 1930s. == Operational use == 抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「Sikorsky S-39」の詳細全文を読む スポンサード リンク
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