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Ōsaka Ōsaka (thành phố) Ōsakasayama Osaka Naomi Osaka (định hướng) Osaka City Dome Osaka Castle Hall Osaka (vịnh) Osaka World Trade Center Building Osama bin LadenTài liệu tham khảo
WikiPedia: Ōsaka http://www.pref.osaka.lg.jp/ http://www.pref.osaka.lg.jp/koho/character/index.h... http://www.octb.jp/english/ http://www.pref.osaka.jp/ //tools.wmflabs.org/geohack/geohack.php?language=v... https://commons.wikimedia.org/wiki/Category:Osaka_...