Dockrill,
S. J., and J. M. Bond. 2009. Sustainability and Resilience in
Prehistoric North Atlantic Britain: The Importance of a Mixed
Paleoeconomic System. Journal of the North Atlantic 2:33–50. doi:
10.3721/037.002.0105.
Crosby,
A. W. Germs, Seeds & Animals: Studies in Ecological History.
ME Sharpe Inc, 1994.
Wright, Karen. 1998. “Empires in the Dust.” Discover
(March): 94–99.
Anon. Atlas of the Biosphere. 2010. Available
at: http://www.sage.wisc.edu/atlas/index.php. Accessed September 18,
2010.
“Progressive
Forest Clearing, Bolivia.” Text.Article, December 22, 2008.
http://earthobservatory.nasa.gov/IOTD/view.php?id=36245.