http://www.eugeo.org/	183
http://www.gatm.org.uk/	138
http://www.census.gov/	141
http://www.ined.fr/	144
http://epp.eurostat.ec.europa.eu/portal/page/portal/eurostat/home	135
http://www.un.org/en/development/desa/population	136
http://www.lib.utexas.edu/maps/index.html	153
http://www.nationalgeographic.com/	156
http://www.mondialisations.org/php/public/index.php	140
http://www.inegalites.fr/	142
http://www.herodote.org/index.php	125
http://www.worldmapper.org/	147
http://www.transnationale.org/	131
http://project.oldmapsonline.org/collections	129
http://www.daftlogic.com/projects-google-maps-distance-calculator.htm	151