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yilai1002 2009/09/14

[img]https://www.instrument.com.cn/bbs/images/affix.gif[/img][url=http://www.instrument.com.cn/bbs/download.asp?ID=170986]2 Magnetic investigations of framboidal greigite formation: A record of anthropogenic environmental changes in eutrophic Lake St Moritz, Switzerland[/url]