541 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 1996-08-23 07:25:28
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542 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 1999-03-25 07:50:45
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543 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2000-11-13 08:09:44
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544 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 1996-09-20 09:45:25
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545 | Add to Reading ListSource URL: www.people.fas.harvard.eduLanguage: English - Date: 2013-11-19 10:08:00
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546 | Add to Reading ListSource URL: www.cs.cmu.eduLanguage: English - Date: 2002-06-18 10:39:08
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547 | Add to Reading ListSource URL: library.brown.eduLanguage: English - Date: 2014-05-07 17:23:38
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548 | Add to Reading ListSource URL: www.dhr.virginia.govLanguage: English - Date: 2007-07-02 10:59:25
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549 | Add to Reading ListSource URL: venturiscottbrown.orgLanguage: English - Date: 2012-07-07 10:14:05
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550 | Add to Reading ListSource URL: www.panmodern.comLanguage: English - Date: 2009-06-01 08:41:03
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