81 | Add to Reading ListSource URL: www.tn.govLanguage: English - Date: 2013-05-10 13:24:22
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82 | Add to Reading ListSource URL: www.onegeology.orgLanguage: English - Date: 2011-07-21 12:02:54
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83 | Add to Reading ListSource URL: woodshole.er.usgs.govLanguage: English - Date: 2007-02-22 13:30:44
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84 | Add to Reading ListSource URL: des.nh.govLanguage: English - Date: 2014-06-13 14:09:24
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85 | Add to Reading ListSource URL: www.earthsciweek.orgLanguage: English - Date: 2013-11-15 16:24:07
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86 | Add to Reading ListSource URL: www.nwrc.usgs.govLanguage: English - Date: 2012-07-06 09:16:00
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87 | Add to Reading ListSource URL: www.usouthal.eduLanguage: English - Date: 2012-05-14 22:26:28
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88 | Add to Reading ListSource URL: pubs.usgs.govLanguage: English - Date: 2003-01-17 16:30:15
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89 | Add to Reading ListSource URL: www.maine.govLanguage: English - Date: 2013-10-02 13:50:16
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90 | Add to Reading ListSource URL: www.maine.govLanguage: English - Date: 2014-03-13 09:11:55
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