71 | Add to Reading ListSource URL: pdf.oac.cdlib.orgLanguage: English - Date: 2014-12-15 21:53:11
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72 | Add to Reading ListSource URL: www.africatrek.comLanguage: English - Date: 2013-04-27 04:10:36
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73 | Add to Reading ListSource URL: gulcfac.typepad.comLanguage: English - Date: 2008-10-06 04:23:25
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74 | Add to Reading ListSource URL: www.sdbor.eduLanguage: English - Date: 2013-04-04 11:27:34
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75 | Add to Reading ListSource URL: water.usgs.govLanguage: English - Date: 2002-04-11 17:40:20
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76 | Add to Reading ListSource URL: pdf.oac.cdlib.orgLanguage: English - Date: 2014-10-05 15:38:07
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77 | Add to Reading ListSource URL: rock.geosociety.orgLanguage: English - Date: 2008-06-18 12:23:34
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78 | Add to Reading ListSource URL: rock.geosociety.orgLanguage: English - Date: 2008-06-18 12:25:55
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79 | Add to Reading ListSource URL: www.waterburypubliclibrary.comLanguage: English - Date: 2014-07-16 16:05:01
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80 | Add to Reading ListSource URL: asv-archeology.orgLanguage: English - Date: 2014-09-25 16:10:10
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