11 | Add to Reading ListSource URL: www.epa.govLanguage: English - Date: 2012-07-24 13:52:25
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12 | Add to Reading ListSource URL: www.epa.govLanguage: English - Date: 2014-01-10 12:41:38
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13 | Add to Reading ListSource URL: www.epa.govLanguage: English - Date: 2012-04-04 12:13:03
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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: www.michigan.govLanguage: English - Date: 2012-12-07 16:57:19
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16 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 1999-10-05 12:03:51
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17 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 1999-10-05 11:08:44
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18 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2005-01-12 14:44:33
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19 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2012-01-24 14:55:36
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20 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2007-01-19 10:19:30
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