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E-learning: Basic knowledge > Human beings >> Trends and regularities

Népességnövekedés.pdf290.03 KB

Source

http://en.wikipedia.org/wiki/World_population

http://histor.btk.ppke.hu/

http://geography.about.com/od/obtainpopulationdata/a/worldpopulation.htm

http://geographic.hu/index.php?act=napi&rov=3&id=2963