25 marzo 2015
Researchers have developed a county-by-county map of the United States’ «lower 48» that tells a story of land cover and development across the nation, and could provide a framework for planners and policy makers as they consider future development.
http://feeds.sciencedaily.com/~r/sciencedaily/~3/z8oJFcBBUHA/150325151735.htm
