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本图原来发表于Flickr,作者为The Finnish Museum of Photography,网址为https://www.flickr.com/photos/108605878@N06/14854805748;经FlickreviewR于2015-01-21 00:51:34审查后,确认本图以No known copyright restrictions释出,相容于维基共享资源。然而上述的授权条款与来源处不同,因而无法确定本页所提供的授权条款是否有效。