951 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2011-02-28 14:47:44
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952 | Add to Reading ListSource URL: www.epa.govLanguage: English - Date: 2010-03-24 17:21:04
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953 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2013-01-14 12:04:33
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954 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2006-12-13 15:01:24
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955 | Add to Reading ListSource URL: www.epa.govLanguage: English - Date: 2012-01-09 17:42:30
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956 | Add to Reading ListSource URL: asfc.gc.caLanguage: English - Date: 2013-11-22 13:52:48
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957 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2013-05-29 10:23:12
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958 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2002-02-14 13:10:36
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959 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2012-08-15 15:18:53
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960 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2012-03-16 14:55:45
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