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| Libros | Libros |
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| Libros | Libros |
 ... Greek and Roman lead and silver mining and smelting activities polluted the middle troposphere of the Northern Hemisphere on a hemispheric scale two millennia ago, long before the Industrial Revolution. Cumulative lead fallout to the Greenland ice...  The Structure of Big History from the Big Bang Until Today - Página 83 por Fred Spier - 1996 - 113 páginas Vista completa -
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