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, 19:34, 18 November 2014
==Useful links==
* [https://en.wikipedia.org/wiki/Geochemistry Wikipedia article]
* [http://www.acs.org/content/acs/en/careers/college-to-career/chemistry-careers/geochemistry.html American Chemical Society]
* [http://www.usgs.gov/science/science.php?term=437 U.S. Geological Survey]
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