Étape 7: Coût de la sécheresse
http://www.magazine.NOAA.gov/Stories/mag51.htm
Images
http://www.wunderground.com/blog/JeffMasters/comment.html?entrynum=681&page=6 la sécheresse
http://crisisboom.com/2011/05/02/Texas-Drought-Worst-since-1895/
http://www.magazine.NOAA.gov/Stories/mag51.htm
Images
http://www.wunderground.com/blog/JeffMasters/comment.html?entrynum=681&page=6 la sécheresse
http://crisisboom.com/2011/05/02/Texas-Drought-Worst-since-1895/