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CITYPOP*http://www.citypopulation.de/Chile.html
POP*http://www.ine.cl/ine/canales/chile_estadistico/home.php
POP2*http://www.visitingchile.com/regiones/region-sur/region-bio-bio/provincia-arauco/provincia-arauco.php
DEMOGRAFIA*http://www.ine.cl/ine/canales/chile_estadistico/demografia_y_vitales/demografia/demografia.php
DIVA*http://www.cipotato.org/DIVA/data/DataServer.asp?AREA=CHL&THEME=_adm
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CIA*https://www.cia.gov/cia/publications/factbook/geos/ci.html
ISO3166_1*https://www.cia.gov/library/publications/the-world-factbook/
ISO3166_2*https://www.cia.gov/library/publications/the-world-factbook/