51 | Add to Reading ListSource URL: www.gsahist.orgLanguage: English - Date: 2010-12-07 20:17:40
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52 | Add to Reading ListSource URL: geotop.uqam.caLanguage: English - Date: 2014-01-13 08:30:21
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53 | Add to Reading ListSource URL: www.gsahist.orgLanguage: English - Date: 2010-12-07 20:21:45
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54 | Add to Reading ListSource URL: rock.geosociety.org- Date: 2014-06-24 15:43:19
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55 | Add to Reading ListSource URL: www.gsahist.orgLanguage: English - Date: 2010-12-07 20:21:39
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56 | Add to Reading ListSource URL: www.gsahist.orgLanguage: English - Date: 2013-10-31 22:10:28
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57 | Add to Reading ListSource URL: www.gsahist.orgLanguage: English - Date: 2010-12-07 20:21:58
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58 | Add to Reading ListSource URL: www.gsahist.orgLanguage: English - Date: 2013-03-24 10:33:50
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59 | Add to Reading ListSource URL: www.gsahist.orgLanguage: English - Date: 2012-02-07 23:26:53
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60 | Add to Reading ListSource URL: www.minsocam.org- Date: 2012-04-19 13:54:30
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