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File:World Lead Production.jpg


English: World Lead production,
Date 14 March 2011 (original upload date)
Source RafaelG ( talk), Source of the data: Greenland Ice Core Evidence of Hemispheric Lead Pollution Two Millennia Ago by Greek and Roman Civilizations, Hong. S. et al., Science, vol. 265, 23 September 1994, page 1842.
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Author RafaelG at en.wikipedia


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