51 | Add to Reading ListSource URL: monographs.iarc.frLanguage: English - Date: 2014-04-01 08:47:39
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52 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2002-02-13 13:29:05
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53 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2003-02-11 10:33:46
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54 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2000-03-06 10:29:21
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55 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2001-02-01 11:02:37
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56 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2005-01-12 10:18:16
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57 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 1999-05-12 12:51:19
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58 | Add to Reading ListSource URL: www.theemeraldempire.comLanguage: English - Date: 2011-06-28 19:00:08
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59 | Add to Reading ListSource URL: connecticutexplored.orgLanguage: English - Date: 2010-09-02 06:55:09
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60 | Add to Reading ListSource URL: www.preciousgemstones.comLanguage: English - Date: 2011-07-02 18:59:58
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