41 | Add to Reading ListSource URL: minerals.er.usgs.govLanguage: English - Date: 2006-03-01 08:38:44
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42 | Add to Reading ListSource URL: minerals.er.usgs.govLanguage: English - Date: 2013-06-21 09:55:02
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43 | Add to Reading ListSource URL: minerals.er.usgs.govLanguage: English - Date: 2011-04-25 14:43:33
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44 | Add to Reading ListSource URL: minerals.er.usgs.govLanguage: English - Date: 2013-03-13 10:52:55
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45 | Add to Reading ListSource URL: minerals.er.usgs.govLanguage: English - Date: 2012-08-15 14:40:31
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46 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2004-09-14 13:32:19
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47 | Add to Reading ListSource URL: minerals.er.usgs.govLanguage: English - Date: 2007-12-04 13:11:49
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48 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2012-02-10 13:24:25
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49 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2011-04-25 14:43:33
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50 | Add to Reading ListSource URL: files.dnr.state.mn.usLanguage: English - Date: 2014-04-02 12:46:05
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