References
"Facts on Volcanoes" [online] 200? http://volcano.und.nodak.edu/vwdocs/frequent_questions/group8_new.html
Moores, E. Volcanoes and Earthquakes. Time Life Book: VA 1995.
"Hawaiian Volcanoes" [online] 2003 http://hvo.wr.usgs.gov/
"Earth's Active Volcanoes" Michigan University [online] 2004 http://www.geo.mtu.edu/volcanoes/world.html
"Volcano World" [online] 2003 http://volcano.und.nodak.edu/vw.html
"Principal Types of Volcanoes" [online] 2004 http://pubs.usgs.gov/gip/volc/types.html
"Exploring the Environment-Volcanoes" [online] 2004 http://www.cotf.edu/ete/modules/volcanoes/vtypesvolcan1.html
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