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http://www.highearthorbit.com/projects/geoextension
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http://www.mreriksson.net/howtos/visor-t39-gprs
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http://earth-info.nga.mil/gns/html
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http://phpwirelessmap.sourceforge.net/wiki/wakka.php?wiki=PagePrincipale
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http://www.linuxforums.org/news/article-24818.html