Original source: http://xkcd.com/1688/
Nat Case
INCase, LLC
Minneapolis, MN
On 6/1/16 10:39 AM, Carlson, Tom wrote:
> Useful and fun.
>
>
> --
> Tom Carlson, PhD, GISP
> National Map Liaison
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> US Geological Survey
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>
> *The National Map <http://nationalmap.gov> - Your Source for
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>