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       xkcd - A Webcomic - Ice Sheets (1225)
        
       Image:
 (PNG) ice_sheets.png
        
       Data adapted from 'The Laurentide and Innuitian ice sheets during
       the Last Glacial Maximum' by A.S. Dyke et. al., which was way
       better than the sequels 'The Laurentide and Innuitian ice sheets
       during the Last Glacial Maximum: The Meltdown' and 'The
       Laurentide and Innuitian ice sheets during the Last Glacial
       Maximum: Continental Drift'.
        
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