1 | Add to Reading ListSource URL: www.epa.govLanguage: English - Date: 2012-04-04 12:13:01
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2 | Add to Reading ListSource URL: www.epa.govLanguage: English - Date: 2012-04-04 12:13:01
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3 | Add to Reading ListSource URL: www.epa.govLanguage: English - Date: 2012-04-04 12:13:01
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4 | Add to Reading ListSource URL: www.epa.govLanguage: English - Date: 2012-04-04 12:13:01
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5 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2004-03-30 10:09:04
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6 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2000-03-07 08:39:19
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7 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2001-02-01 13:44:34
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8 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2003-02-11 14:31:14
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9 | Add to Reading ListSource URL: www.rci.rutgers.eduLanguage: English - Date: 2008-02-03 09:35:20
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