631 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 1999-10-05 10:29:40
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632 | Add to Reading ListSource URL: www.insg.orgLanguage: English - Date: 2010-11-25 11:01:05
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633 | Add to Reading ListSource URL: www.insg.orgLanguage: English - Date: 2010-11-25 11:03:32
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634 | Add to Reading ListSource URL: chemistry.about.comLanguage: English - Date: 2014-03-12 19:27:00
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635 | Add to Reading ListSource URL: www.insg.orgLanguage: English - Date: 2010-11-25 11:03:24
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636 | Add to Reading ListSource URL: images.apple.comLanguage: English - Date: 2014-05-26 09:23:39
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637 | Add to Reading ListSource URL: www.sciencestuff.comLanguage: English - Date: 2013-07-02 14:22:51
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638 | Add to Reading ListSource URL: www.asfc-cbsa.gc.caLanguage: English - Date: 2014-06-24 12:10:32
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639 | Add to Reading ListSource URL: www.sciencestuff.comLanguage: English - Date: 2013-07-02 14:22:52
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640 | Add to Reading ListSource URL: www.sciencestuff.comLanguage: English - Date: 2013-07-02 14:22:54
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