USA referaat
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http://www.nationmaster.com/time.php?stat=peo_urb_pop_gro_ann-people-urban-
population-growth-annual&country=us-united-states
https://www.cia.gov/library/publications/the-world-factbook/geos/us.html
http://en.wikipedia.org/wiki/International_wheat_production_statistics
http://en.wikipedia.org/wiki/Maize#Production
http://www.intracen.org/appli1/TradeCom/TP_EP_IC.aspx?
IN=02&YR=2009&IL=02%20%20Meat%20and%20edible%20meat%20offal
http://www.census.gov/ipc/www/idb/country.php
http://hdrstats.undp.org/en/countries/profiles/USA.html
http://hdrstats.undp.org/en/countries/profiles/THA.html
http://legacy.intracen.org/appli1/TradeCom/TP_EP_CI.aspx?RP=842&YR=2009
http://legacy.intracen.org/appli1/TradeCom/TP_IP_CI.aspx?RP=842&YR=2009
Tänan tähelepanu eest!
Aimar Leesment USA
Töö esitatud hilinemisega. Referaat on 20 lk-l, illustreeritud 6 tabeli, 5 foto ja 16 joonisega,
millest 7 on kaardid