51 | Add to Reading ListSource URL: www.dgs.udel.eduLanguage: English - Date: 2009-07-09 11:06:04
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52 | Add to Reading ListSource URL: ftp2.cits.rncan.gc.caLanguage: English - Date: 2011-10-15 05:55:38
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53 | Add to Reading ListSource URL: pubs.usgs.govLanguage: English - Date: 2006-09-26 13:32:50
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54 | Add to Reading ListSource URL: www.nevadamining.orgLanguage: English - Date: 2014-01-13 19:25:37
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55 | Add to Reading ListSource URL: www.nr.gov.nl.caLanguage: English - Date: 2010-11-16 14:59:46
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56 | Add to Reading ListSource URL: www.hou.usra.eduLanguage: English - Date: 2014-04-24 12:52:43
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57 | Add to Reading ListSource URL: www.psrd.hawaii.eduLanguage: English - Date: 2014-05-01 16:27:13
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58 | Add to Reading ListSource URL: www.gnb.caLanguage: English - Date: 2005-09-22 12:10:45
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59 | Add to Reading ListSource URL: pubs.usgs.govLanguage: English - Date: 2007-11-05 13:10:43
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60 | Add to Reading ListSource URL: www.nr.gov.nl.caLanguage: English - Date: 2014-02-28 09:32:22
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