41 | Add to Reading ListSource URL: www.geology.ar.govLanguage: English - Date: 2014-01-10 11:04:15
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42 | Add to Reading ListSource URL: www.geology.arkansas.govLanguage: English - Date: 2013-03-11 16:22:13
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43 | Add to Reading ListSource URL: www.geology.arkansas.govLanguage: English - Date: 2013-08-21 14:04:04
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44 | Add to Reading ListSource URL: www.geology.arkansas.govLanguage: English - Date: 2014-07-18 17:17:30
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45 | Add to Reading ListSource URL: ar.water.usgs.govLanguage: English - Date: 2012-01-31 16:23:06
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46 | Add to Reading ListSource URL: www.geology.arkansas.govLanguage: English - Date: 2013-05-06 16:00:12
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47 | Add to Reading ListSource URL: www.geology.arkansas.govLanguage: English - Date: 2013-05-06 16:02:38
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48 | Add to Reading ListSource URL: www.geology.arkansas.govLanguage: English - Date: 2013-05-06 16:00:31
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49 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2000-02-15 10:38:03
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50 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2007-08-30 08:44:52
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