51 | Add to Reading ListSource URL: www.handbookofmineralogy.comLanguage: English - Date: 2007-09-30 00:55:02
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52 | Add to Reading ListSource URL: www.handbookofmineralogy.comLanguage: English - Date: 2007-09-30 00:54:50
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53 | Add to Reading ListSource URL: www.glassassociation.co.ukLanguage: English - Date: 2012-02-25 12:47:11
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54 | Add to Reading ListSource URL: www.cresp.orgLanguage: English - Date: 2008-12-26 11:17:12
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55 | Add to Reading ListSource URL: www.sis.org.ukLanguage: English - Date: 2009-09-03 01:45:16
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56 | Add to Reading ListSource URL: www.minsocam.orgLanguage: English - Date: 2007-04-05 07:38:06
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57 | Add to Reading ListSource URL: www.handbookofmineralogy.comLanguage: English - Date: 2007-09-30 02:57:10
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58 | Add to Reading ListSource URL: www.handbookofmineralogy.comLanguage: English - Date: 2007-09-30 02:49:20
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59 | Add to Reading ListSource URL: www.handbookofmineralogy.comLanguage: English - Date: 2007-09-30 02:24:46
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60 | Add to Reading ListSource URL: www.handbookofmineralogy.comLanguage: English - Date: 2007-09-30 01:54:20
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