641 | Add to Reading ListSource URL: minerals.er.usgs.govLanguage: English - Date: 2000-10-06 13:00:39
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642 | Add to Reading ListSource URL: minerals.er.usgs.govLanguage: English - Date: 2006-07-26 08:55:40
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643 | Add to Reading ListSource URL: minerals.er.usgs.govLanguage: English - Date: 2013-07-01 14:27:55
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644 | Add to Reading ListSource URL: catalytic-diplomacy.orgLanguage: English - Date: 2009-08-06 10:57:20
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645 | Add to Reading ListSource URL: www.paultaylor.euLanguage: English - Date: 2009-02-12 13:08:48
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646 | Add to Reading ListSource URL: www.paultaylor.euLanguage: English - Date: 2009-02-12 13:26:18
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647 | Add to Reading ListSource URL: catalytic-diplomacy.orgLanguage: English - Date: 2009-08-06 10:57:27
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648 | Add to Reading ListSource URL: minerals.er.usgs.govLanguage: English - Date: 2007-09-06 09:16:43
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649 | Add to Reading ListSource URL: minerals.er.usgs.govLanguage: English - Date: 1998-07-28 09:55:16
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650 | Add to Reading ListSource URL: www.marble-institute.comLanguage: English - Date: 2015-02-23 14:10:28
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