421 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 1997-03-10 10:08:18
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422 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 1999-02-05 08:33:19
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423 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2007-01-19 09:00:33
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424 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2006-01-19 08:24:41
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425 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2003-02-11 12:09:26
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426 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2004-11-01 14:57:43
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427 | Add to Reading ListSource URL: www.epa.govLanguage: English - Date: 2012-04-04 12:13:16
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428 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2014-07-01 16:15:21
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429 | Add to Reading ListSource URL: www.albertacare.orgLanguage: English - Date: 2013-10-06 22:35:24
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430 | Add to Reading ListSource URL: www.epa.govLanguage: English - Date: 2012-04-04 12:13:11
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