http://www.eugeo.org/	168
http://www.gatm.org.uk/	122
http://www.census.gov/	127
http://www.ined.fr/	121
http://epp.eurostat.ec.europa.eu/portal/page/portal/eurostat/home	122
http://www.un.org/en/development/desa/population	126
http://www.lib.utexas.edu/maps/index.html	135
http://www.nationalgeographic.com/	136
http://www.mondialisations.org/php/public/index.php	128
http://www.inegalites.fr/	125
http://www.herodote.org/index.php	113
http://www.worldmapper.org/	130
http://www.transnationale.org/	114
http://project.oldmapsonline.org/collections	116
http://www.daftlogic.com/projects-google-maps-distance-calculator.htm	125