11 | Add to Reading ListSource URL: www.epa.govLanguage: English - Date: 2014-01-10 12:41:38
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12 | Add to Reading ListSource URL: www.epa.govLanguage: English - Date: 2012-04-04 12:13:03
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13 | Add to Reading ListSource URL: minerals.er.usgs.govLanguage: English - Date: 1998-02-19 14:40:33
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14 | Add to Reading ListSource URL: www.epa.govLanguage: English - Date: 2012-04-04 12:13:03
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15 | Add to Reading ListSource URL: pubs.usgs.govLanguage: English - Date: 2014-07-01 14:33:44
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16 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2006-08-15 09:06:27
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17 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2010-01-27 09:13:00
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18 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 1998-02-19 14:40:33
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19 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2007-09-04 07:34:56
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20 | Add to Reading ListSource URL: sdpd.univ-lemans.frLanguage: English - Date: 2004-12-06 04:07:12
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