Ensenyar GIS a l&#39;institut als USA <a href="http://www.directionsmag.com/articles/experiences-teaching-free-and-open-source-gis-at-the-community-college/212522">http://www.directionsmag.com/articles/experiences-teaching-free-and-open-source-gis-at-the-community-college/212522</a><br>
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