431 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2009-01-30 10:01:16
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432 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2007-09-26 15:50:56
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433 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2010-01-27 09:04:05
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434 | Add to Reading ListSource URL: www.sciencestuff.comLanguage: English - Date: 2013-05-30 11:22:19
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435 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2002-02-14 10:54:25
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436 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2011-05-06 10:24:00
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437 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2002-05-07 07:11:24
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438 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2000-03-07 08:11:48
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439 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2005-01-12 11:01:22
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440 | Add to Reading ListSource URL: www.cdph.ca.govLanguage: English - Date: 2014-07-09 15:16:24
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