* Interactive map of all X-Files via via @realivansanchez http://www.geography.wisc.edu/courses/geog572/f12/roberts/index.html
* Analysis of the changes on OSM tags via @realivansanchez http://matiasdahl.iki.fi/2015/finding-related-amenity-tags-on-the-openstreetmap * Evolution of the Spanish railway network 1860-1985 via @realivansanchez http://www.geotren.es/blog/como-era-la-red-ferroviaria-espanola-en-1860-1880-1941-1948-y-antes-de-1985/ * Online interactive high precision scan of the Codex Dresdensis via @realivansanchez http://blattspinat.com/index.php/posts/maya-codex-in-2-2-gigapixeln * The personal experience of a ten years collaboration with OSM via @realivansanchez https://www.openstreetmap.org/user/maning/diary/37779 Ivan Raf
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