21 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2011-07-05 13:26:00
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22 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 1997-02-25 10:11:55
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23 | Add to Reading ListSource URL: www.mediate.comLanguage: English - Date: 2007-08-27 11:49:02
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24 | Add to Reading ListSource URL: www.oktedi.comLanguage: English - Date: 2011-04-13 21:10:34
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25 | Add to Reading ListSource URL: www.ledevoir.comLanguage: English - Date: 2012-02-29 17:12:58
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26 | Add to Reading ListSource URL: www.earthworksaction.orgLanguage: English - Date: 2012-02-27 21:26:57
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