11 | Add to Reading ListSource URL: www.nps.govLanguage: English - Date: 2004-01-28 13:20:50
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12 | Add to Reading ListSource URL: mae.cee.illinois.eduLanguage: English - Date: 2013-10-25 18:23:00
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13 | Add to Reading ListSource URL: earthquake.usgs.govLanguage: English - Date: 2012-07-23 18:55:28
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14 | Add to Reading ListSource URL: www.geo.science.unideb.huLanguage: English - Date: 2009-04-09 07:14:54
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15 | Add to Reading ListSource URL: water.usgs.govLanguage: English - Date: 2001-07-09 17:47:57
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16 | Add to Reading ListSource URL: pubs.usgs.govLanguage: English - Date: 2010-09-30 06:44:40
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17 | Add to Reading ListSource URL: www.earthscope.orgLanguage: English - Date: 2014-04-09 15:00:04
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18 | Add to Reading ListSource URL: memphis.eduLanguage: English - Date: 2014-08-19 11:37:04
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19 | Add to Reading ListSource URL: presscm.umsystem.eduLanguage: English - Date: 2011-10-24 12:39:43
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20 | Add to Reading ListSource URL: www.searchanddiscovery.comLanguage: English - Date: 2008-03-25 03:28:50
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