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http://geology.usgs.gov/index.htm - This is The U.S. Geological Survey home page. Here you will find the most up-to-date news and publications, research, and information pertaining to the field of geology. |
http://www.cliffsnotes.com/WileyCDA/CliffsRe viewTopic/Geology.topicArticleId-9605.html - Cliffs Notes provides quite a few free articles to help you understand the science behind the earth's structure. |