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Oku Yasukata Tham khảoLiên quan
Okuda Saki Okuyama Kazusa Okurigana Oku Daisuke Oku Yasukata Okushiri, Hokkaidō Okujepisa omukazendu Okuno Hiroaki Okubo Takuo Okubo TetsuyaTài liệu tham khảo
WikiPedia: Oku Yasukata http://www.ndl.go.jp/portrait/e/datas/24.html https://archive.org/details/encyclopediaofmi0000du... https://archive.org/details/russojapanesewar00juke...