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웨이백 머신 - 위키백과, 우리 모두의 백과사전
https://ko.wikipedia.org/wiki/%EC%9B%A8%EC%9D%B4%EB%B0%B1_%EB%A8%B8%EC%8B%A0flood definition - Dictionary - MSN Encarta
https://web.archive.org/web/20110204203836/http://encarta.msn.com/encnet/features/dictionary/DictionaryResults.aspx?refid=1861612277https://encarta.msn.com/encnet/features/dictionary/DictionaryResults.aspx?refid=1861612277
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