41 | Add to Reading ListSource URL: pubs.usgs.govLanguage: English - Date: 2007-11-05 13:10:53
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42 | Add to Reading ListSource URL: www.gnb.caLanguage: English - Date: 2011-01-12 08:42:02
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43 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 1999-02-05 08:33:19
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44 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2013-12-30 17:16:00
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45 | Add to Reading ListSource URL: pubs.usgs.govLanguage: English - Date: 2011-06-27 10:01:14
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46 | Add to Reading ListSource URL: www.maine.govLanguage: English - Date: 2014-03-12 14:41:10
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47 | Add to Reading ListSource URL: library.iem.ac.ruLanguage: English - Date: 2001-02-27 05:36:14
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48 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2004-01-13 11:49:58
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49 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2003-02-11 14:05:36
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50 | Add to Reading ListSource URL: rruff.infoLanguage: English - Date: 2005-11-08 13:10:10
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