Dating old maps (xkcd decision flow-chart) via http://imgs.xkcd.com/comics/map_age_guide_large.png By arthurwelle On June 02, 2016 at 12:46...
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Showing posts with label Dating old maps (xkcd decision flow-chart). Show all posts
Showing posts with label Dating old maps (xkcd decision flow-chart). Show all posts
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