71 | Add to Reading ListSource URL: certmapper.cr.usgs.govLanguage: English - Date: 2005-05-20 10:10:28
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72 | Add to Reading ListSource URL: pubs.usgs.govLanguage: English - Date: 2010-11-08 13:37:58
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73 | Add to Reading ListSource URL: pubs.usgs.govLanguage: English - Date: 2011-06-13 19:06:33
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74 | Add to Reading ListSource URL: pubs.usgs.govLanguage: English - Date: 2012-06-04 17:39:36
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75 | Add to Reading ListSource URL: pubs.usgs.govLanguage: English - Date: 2012-03-22 09:44:24
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76 | Add to Reading ListSource URL: pubs.usgs.govLanguage: English - Date: 2013-11-21 15:53:36
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77 | Add to Reading ListSource URL: certmapper.cr.usgs.govLanguage: English - Date: 2005-05-20 10:08:48
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78 | Add to Reading ListSource URL: pubs.usgs.govLanguage: English - Date: 2010-05-04 13:39:23
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79 | Add to Reading ListSource URL: certmapper.cr.usgs.govLanguage: English - Date: 2005-05-20 10:07:08
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80 | Add to Reading ListSource URL: www.uky.eduLanguage: English - Date: 2009-01-02 21:01:23
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