41 | Add to Reading ListSource URL: www.rockinst.orgLanguage: English - Date: 2009-01-02 16:51:48
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42 | Add to Reading ListSource URL: cegis.usgs.govLanguage: English - Date: 2013-03-07 12:49:37
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43 | Add to Reading ListSource URL: www2.southeastern.eduLanguage: English - Date: 2014-06-17 09:17:59
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44 | Add to Reading ListSource URL: derrypres.orgLanguage: English - Date: 2013-02-25 10:22:04
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45 | Add to Reading ListSource URL: ai.eecs.umich.eduLanguage: Spanish - Date: 2007-09-29 11:27:36
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46 | Add to Reading ListSource URL: www.stolaf.eduLanguage: English - Date: 2011-04-19 20:09:56
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47 | Add to Reading ListSource URL: chroniclingamerica.loc.govLanguage: English - Date: 2009-02-25 09:16:02
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48 | Add to Reading ListSource URL: digital.libraries.ou.eduLanguage: English - Date: 2002-07-26 20:09:25
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49 | Add to Reading ListSource URL: digital.libraries.ou.eduLanguage: English - Date: 2005-05-10 16:09:40
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