31 | Add to Reading ListSource URL: www.mine-engineer.comLanguage: English - Date: 2013-10-28 22:25:24
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32 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2002-04-11 14:39:34
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33 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2012-11-28 14:06:35
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34 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2010-01-19 13:22:23
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35 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2006-08-23 09:59:20
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36 | Add to Reading ListSource URL: www.cifss.orgLanguage: English - Date: 2008-02-15 16:45:15
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37 | Add to Reading ListSource URL: kisi.deu.edu.trLanguage: English - Date: 2005-06-17 05:05:38
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