List of municipal flags of Hokkaidō
Defense. Archived from the original on 3 January 2015. "町の紹介". Sōbetsu. "洞爺湖町が
箱根
町と災害協定-物資援助など相互応援". Kenshin. Archived from the original on 25 March 2016. "洞爺湖町の概要"...
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