11 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2014-11-17 12:55:33
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12 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2014-10-02 15:47:10
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13 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2014-09-23 16:02:35
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14 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2014-10-21 15:53:54
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15 | Add to Reading ListSource URL: pubs.usgs.govLanguage: English - Date: 2014-08-28 10:58:00
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16 | Add to Reading ListSource URL: www.epa.govLanguage: English - Date: 2014-09-05 11:13:28
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17 | Add to Reading ListSource URL: www.gpo.govLanguage: English - Date: 2010-12-02 02:27:37
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18 | Add to Reading ListSource URL: tfeip-secretariat.orgLanguage: English - Date: 2012-04-04 04:32:48
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19 | Add to Reading ListSource URL: www.ncnr.nist.govLanguage: English - Date: 2014-01-15 16:29:16
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20 | Add to Reading ListSource URL: www.kwgresources.comLanguage: English - Date: 2014-11-14 14:24:53
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