681 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2014-05-14 17:48:07
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682 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 1999-10-05 11:15:56
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683 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2013-10-21 14:59:21
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684 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2002-02-13 13:47:40
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685 | Add to Reading ListSource URL: www.epa.govLanguage: English - Date: 2005-10-31 15:09:06
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686 | Add to Reading ListSource URL: www.epa.govLanguage: English - Date: 2009-05-11 11:59:39
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687 | Add to Reading ListSource URL: www.epa.govLanguage: English - Date: 2005-11-01 11:53:57
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688 | Add to Reading ListSource URL: www.epa.govLanguage: English - Date: 2005-11-01 09:20:02
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689 | Add to Reading ListSource URL: www.epa.govLanguage: English - Date: 2005-11-01 11:54:00
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690 | Add to Reading ListSource URL: www.epa.govLanguage: English - Date: 2005-11-01 11:53:57
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