원문출처 : http://www.cnn.com/2016/04/26/design/wooden-skyscrapers-timber-trend-catching-fire/index.html
2016.06.21 12:05
Wood: Safer than steel in a fire?
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원문출처 : http://www.cnn.com/2016/04/26/design/wooden-skyscrapers-timber-trend-catching-fire/index.html
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