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Riaz is a municipality in the district of Gruyère in the canton of Fribourg in Switzerland. ==History== Riaz is first mentioned in 900 as ''Villa Roda''. The municipality was formerly known by its German name ''Zum Rad'', however, that name is no longer used.〔 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「Riaz」の詳細全文を読む スポンサード リンク
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