61 | Add to Reading ListSource URL: rock.geosociety.orgLanguage: English - Date: 2008-06-18 12:14:52
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62 | Add to Reading ListSource URL: www.selfrag.comLanguage: English - Date: 2012-08-24 08:11:38
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63 | Add to Reading ListSource URL: pubs.usgs.govLanguage: English - Date: 2011-11-16 12:10:58
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64 | Add to Reading ListSource URL: rock.geosociety.orgLanguage: English - Date: 2011-11-23 11:41:45
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65 | Add to Reading ListSource URL: www.planetary.brown.eduLanguage: English - Date: 2014-12-01 10:15:35
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66 | Add to Reading ListSource URL: www.dep.wv.govLanguage: English - Date: 2009-09-21 09:46:27
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67 | Add to Reading ListSource URL: www.geosociety.orgLanguage: English - Date: 2013-09-27 12:06:09
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68 | Add to Reading ListSource URL: www.soest.hawaii.eduLanguage: English - Date: 2014-06-03 20:33:45
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69 | Add to Reading ListSource URL: www.agiweb.orgLanguage: English - Date: 2010-03-08 14:10:53
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70 | Add to Reading ListSource URL: www.nps.govLanguage: English - Date: 2008-10-29 13:48:13
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