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Where's the postbox? wellbutrin weight 2007 jelsoft enterprises ltd He and colleagues from the University of Colorado, the University of Bremen, the University of Michigan, the Smithsonian Institution and the University of New Hampshire report that carbonate or limestone nodules in Wyoming sediment cores show that the PETM global warming episode involved the average annual release of a minimum of 0.9 petagrams (1.98 trillion pounds) of carbon to the atmosphere, likely over shorter periods of time.
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