http://www.happyplanetindex.org/
http://www.happyplanetindex.org/public-data/files/happy-planet-index-2-0.pdf&pli=1
https://www.cia.gov/library/publications/the-world-factbook/geos/cs.html
https://www.cia.gov/library/publications/the-world-factbook/geos/lu.html
Images
http://www.costa-rica-cruises.com/costa-rica-cruises-1.jpg
http://costaricatravelandrealestatesite.com/wp-content/uploads/2009/02/costa-rica-waterfall.jpg
http://www.wildnatureimages.com/images%202/041105-161.jpg
http://cache.virtualtourist.com/2031836-Luxembourg-Luxembourg.jpg
http://www.europeancheapflights.com/images/destinations/Luxembourg.jpg
http://www.euratlas.com/Atlas/paris/paris_palais_du_luxembourg.jpg
http://www.happyplanetindex.org/public-data/files/happy-planet-index-2-0.pdf&pli=1
https://www.cia.gov/library/publications/the-world-factbook/geos/cs.html
https://www.cia.gov/library/publications/the-world-factbook/geos/lu.html
Images
http://www.costa-rica-cruises.com/costa-rica-cruises-1.jpg
http://costaricatravelandrealestatesite.com/wp-content/uploads/2009/02/costa-rica-waterfall.jpg
http://www.wildnatureimages.com/images%202/041105-161.jpg
http://cache.virtualtourist.com/2031836-Luxembourg-Luxembourg.jpg
http://www.europeancheapflights.com/images/destinations/Luxembourg.jpg
http://www.euratlas.com/Atlas/paris/paris_palais_du_luxembourg.jpg
