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References

http://volcano.oregonstate.edu/, 3/9/15, Oregon State

http://www.britannica.com/EBchecked/topic/708285/Vertisol,3/19/15, Encyclopadia Britannia

http://www.sciencedirect.com/science/article/pii/0377027385900502, 3/19/15, Science Direct

http://www.windows2universe.org/, 3/19/15, Window 2 the Universe

http://www.explorevolcanoes.com/, 3/19/15, Explore Volcanos

http://climate-zone.com/, 3/19/15, Climate-Zone

http://caribbean-direct.com/ , 3/9/15, Caribbean-direct

http://amandajpelee.blogspot.com/, 3/19/15, blogspot

 

 

 

 

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