http://www.mathaba.net/news/?x=530827
http://en.wikipedia.org/wiki/Ecological_economics
http://www.forexrazor.com/Analysis/Main/articleType/ArticleView/articleId/75581/Currency-Oil-Silver-Analysis-and-Charts.aspx
http://www.exchange-rates.org/history/USD/EUR/G/180
neljapäev, 29. aprill 2010
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